Black Technology Refresher Manual

Sheng Mingan knew about the bib voting, because Zhao Da posted a link in the penguin group, and asked three times in surprise: [Master, you want to come to Tianjin University to listen? ]

[You resell technology patents? 400! ]

[Great God!Have you really been accepted as a closed disciple by Professor Zhang Qunfang? ]

[Great God, I beg you to take a look at my humble TvT. ]

At that time, Sheng Mingan was obsessed with the eight optics books given to him by Professor Zhang Qunfang, the contents of which included lasers, ultrafast optics, nonlinear optics...from the shallower to the deeper, layer by layer, and Professor Zhang Qunfang was included in the books A topic that I wrote at random when I was in the mood.

Even Sheng Ming'an would have a certain difficulty in solving that problem, but he just enjoyed it.

It wasn't until two weeks later that eight professional books and classic optical cases were all studied, analyzed and thoroughly understood. Sheng Ming'an breathed a sigh of relief, then picked up his mobile phone and found Zhao Da@his news. Interested, he answered Zhao Da's questions one by one.

[I'm going to Tianjin University to sit in on it.I don't want to continue to operate the technology patent so I resell it.Professor Zhang only agreed to take me with him, but he didn't say that he would accept me as a closed student, and I was only a sophomore in high school. ]

Zhao Da quickly erupted: [Great God, you finally took care of me!God, I have been admitted to Xidian Radar Engineering major!Next year I have to go to Xidian to report, we are no longer in the same city. ]

The three of Wang Ruo immediately came out to express their sadness. They often played games online with Zhao Da, so they had a good relationship.

The news of the penguin group quickly rushed to 99+, Sheng Mingan quit the group chat, left the room to take a shower, and relax the nerves that had been tense from the immersion study for days.

After taking a bath, Sheng Ming An Ying's white skin seemed to be smudged with the juice of ripe cherry blossoms due to the hot air.

He passed by Bogujia, and he couldn't help being surprised when he saw that the pot of beautiful and splendid crabapple was full of flowers.

Sheng Mingan asked Grandpa Sheng who hadn't gone to the company yet: "Didn't this pot of crabapple wither long ago?"

Grandpa Sheng, who was busy in the kitchen, poked his head out and looked, and said loudly: "Xiao Chen is well fed! He waters regularly every day and shovels the soil to catch insects, and the potted flowers will be raised." He carried two bottles of milk Putting the dining table down, he said, "I wanted to throw it away and buy another pot, but it was Xiao Chen who stopped me and told him to raise it."

Grandpa Sheng and Sheng Ming'an both like flowers, especially flower bonsai, but neither of them know how to raise flowers.

This pot of Begonia with stems is the first pot of flower bonsai in the Sheng family that lived to bloom for the second time, and it was all thanks to Chen Jingqiu's meticulous care.

Just as he was talking, Chen Jingqiu ran back from the morning, raised his hand to wipe his sweat and greeted Sheng Mingan:

"Good morning."

Sheng Mingan nodded in response.

Grandpa Sheng shouted in the kitchen: "The two bottles of hot milk on the dining table are for you two! Remember to drink!"

Chen Jingqiu ran into the kitchen diligently to help Grandpa Sheng with things. Grandpa Sheng liked him very much, and he couldn't stop chattering whenever he saw someone. Even during the seemingly lively chatting process, Chen Jingqiu actually seldom replied.

Maybe it's because of her natural emotional intelligence, or maybe it's because she has been struggling in the three schools and nine streams since she was born, and Chen Jingqiu has the ability to not let the scene go cold if she wants to.

He can arouse people's desire to chat endlessly with just a few casual sentences. Grandpa Sheng and his maid love to chat with him.

Sheng Mingan picked up the blooming crabapple flowers, went around the bogu shelf to get the hot milk on the dining table, glanced around, and accidentally noticed that the school pants Chen Jingqiu was wearing were so short that his ankles were exposed.

And he remembered that Chen Jingqiu wore these school pants a month ago, and the length was just right at that time.

Obviously Chen Jingqiu has grown taller again.

Chen Jingqiu is seventeen this year, at an age where it is easy to get taller.

He originally had a height of 180, and in the past two weeks he has been fed all kinds of stew, milk and supplements like water, his height has gradually increased, and he should have grown by five centimeters by visual inspection.

Grandpa still muttered yesterday why Chen Jingqiu didn't gain weight, but now it seems that all the nutrition has been added to the bones.

Sheng Mingan then looked at Chen Jingqiu in the kitchen. He had just finished his morning jog, and was still wearing a loose and simple black sweater and blue school pants. He was wearing a pair of off-brand sneakers. His outfit was strange and old-fashioned.

But Chen Jingqiu has a good frame, tall and long, wide shoulders, narrow waist and long legs, and has a calm momentum beyond his age, which makes the nondescript outfit look low-key and stable.

At this moment, Chen Jingqiu came out holding the soup cup, Sheng Mingan called him to stop, and tapped his index finger on the table: "If you don't drink the milk, it should be cold."

Chen Jingqiu raised his eyes to look at Sheng Mingan, his pupils constricted suddenly, his Adam's apple rolled, and the next moment his eyes passed over Sheng Mingan's crabapple flower behind him, and he said calmly, "Thank you. This is Gastrodia elata and black chicken soup. Drink hot."

"Leave it alone." Sheng Mingan lowered his eyelids, with a lazy expression and a relaxed posture.

He is sitting in a mahogany chair, with his left hand resting on the mahogany dining table, his fingers holding the milk bottle, and his right hand hanging by his side. After taking a bath, his cheeks are flushed, the corners of his eyes are as red as rouge, and his clear eyes are full of relaxation and trust.

The skin is very white, but it's not sickly pale, but a shiny white like a pearl, and a light pinch can leave crazy red marks on it.

The reddish red of mahogany and the lustrous white form the ultimate impact of color difference.

The extremely aggressive and beautiful face has the cleanest and purest eyes, that is the ultimate contrast.

Sheng Ming'an didn't know that his defenseless appearance could arouse the terrible evil desire in the hearts of bystanders.

Chen Jingqiu took a few sips of the milk bottle and was about to leave when Sheng Mingan asked him, "Do you want to buy new clothes? I think your pants are short."

"The school pants are loose and comfortable to wear." Chen Jingqiu stared at the empty milk bottle and said, "I bought all the winter clothes."

"When will the plaster be removed?"

"The doctor said it can be removed next week."

"Hmm... you're teaching yourself physics?"

"just looking around."

"Physics is a very rigorous subject, don't be fooled casually. If you choose it, you must take it seriously."

Xu Shi was emotionally tense for half a month, and Sheng Mingan, who had finally read all the professional books, was really relaxed. His sitting posture became more and more lazy, and his voice was not clear when he spoke. There was a soft nasal sound at the end. Like a feather across the palm of your hand.

The palm of Chen Jingqiu's left hand twitched nervously, and he said, "I...I haven't made up my mind yet, I was sweating all over just now, so I'm going to take a shower first."

"I won't bother you anymore." Sheng Ming'an finally raised his eyes to look at Chen Jingqiu: "If you have any doubts about your studies, you can come to me."

"Okay." Chen Jingqiu hurriedly said and left.

Sheng Mingan glanced at the tips of Chen Jingqiu's ears under his black hair, which seemed a little red.

He frowned, must have read it wrong.

Sheng Mingan took out his mobile phone to contact the private detective, and almost forgot to investigate Chen Jingqiu's half-brother.

The request has already been typed in the message column, and after sending it out, just as he was about to exit, Sheng Mingan suddenly thought of something, so he entered another line of words in the message column: [Another order, check if there is an age in this senior nursing home] About seventeen or eight years old, maybe lame boy, relatively taciturn, likes to read poetry and literature, always with loose hair, um...the left cheek may have burn marks. ]

System: [Host, who are you looking for? 】

Sheng Ming'an: "The person who saved me." '

System: [The information is very vague. 】

The host used a lot of uncertain words in that passage, indicating that even he himself did not know the specific information of the savior.

Sheng Ming'an: "It's good that I can remember him." '

At that time, he was a seriously ill AS patient, and he was frightened in that high-end nursing home, and his mind was somewhat unconscious.

He just remembered that in the next ward there was a disfigured, disabled and mute boy with a broken left leg, his black hair grew so long that it covered his face, but it still couldn't cover the horrific burn marks on his left cheek.

At that time, both of them were notoriously ugly in the nursing home. The doctors and nurses didn't even want to look at them, so they were less tortured.

The young man was hunched all year round, but he was still very tall.

He was very thin, so thin that his shoulder blades were as jagged as strange rocks, but on the night of the fire in the nursing home, he abruptly dragged out Sheng Mingan, who was frightened and huddled in a corner and refused to move.

Sheng Mingan was rescued from the nursing home, and then sent to a real nursing home. Someone paid a high nursing fee for him, slowly cured his disease, and allowed him to live a normal life again.

That was Sheng Ming'an's savior, but Sheng Ming'an's impression of him was very shallow.

At this time, in the guest room of Sheng's family, the bathroom was splashing. Under the shower, Chen Jingqiu was drenched in cold water. The water flowed across the eyebrows and fell from his tall nose.He lowered his head, arched his back, and his protruding shoulder blades were as sharp as a knife.

Chen Jingqiu suddenly opened his eyes, the pupils were as dark as water, they were already calm, as if there had never been any ripples caused by evil desires.

Beside the mahogany dining table, Sheng Ming'an was typing.

[It doesn't matter how high the price is, you have to find him. ]

***

At two o'clock in the afternoon, Sheng Ming'an, who had finished his lunch break, opened ZemaxOpticStudio optical design software.

ZemaxOpticStudio optical design software can provide optical analysis and optical simulation experiments. It is an optical, lighting and laser system design software. Simply put, it is a very professional and practical software in the field of optics.

After all, not everyone can touch the real laser device. Whether it is a novice or a doctoral supervisor, it is necessary to use optical design software for simulation experiments.

Sheng Ming'an doesn't need tutorials, he is very familiar with ZEMAX and used it often before rebirth.

As soon as the software was opened, Sheng Mingan felt very familiar with the familiarity. He let out a long sigh of relief, tapped the air with his ten fingers, and planned to make a random design to practice his hands first.

Let's simulate and design the semiconductor laser collimation and shaping!

The design is very simple. Firstly, the characteristics of the semiconductor laser beam are analyzed, and then the mathematical modeling of the semiconductor laser collimation system is carried out, which mainly involves Fermat's principle and aspheric equation theory.

After the rough design is completed, it can be simulated in the software to complete the indicators.

The most difficult step is mathematical modeling, but as long as the data is processed properly, rigorous and perfect mathematical modeling can be obtained by substituting into the formula step by step.

Sheng Mingan does not need to do calculations on scratch paper. He keeps his eyes on the computer screen and moves his fingers nimbly. The world in the software is created and controlled by him. Precise numbers are input almost non-stop. In the replacement exchange, the combination becomes a beautiful digital model, which is finally transferred to the optical software for simulation.

The result is presented quickly, and the simple and clear graphic contrast can be described as clear and recognizable.

Less than ten seconds after the graphics appeared, they were quickly saved, closed, and thrown into the storage disk. Sheng Mingan didn't even look at his results, but said to the display screen: "The warm-up exercise is over."

He was silent, sitting by the computer, although his face was expressionless, but his brain was running at high speed, from the ultra-short and ultra-intense laser device to the synchrotron radiation device to the XFEL device, from foreign to domestic research progress of various devices and future international research progress. The development trend... The black and white picture jumps one frame after another so fast that people have no time to react before it has already flashed past.

And these fast-moving movie images that seemed to be twenty times fast-forward only existed in Sheng Mingan's mind, and no one was able to see them, so no one was amazed by them.

In the next moment, it suddenly stopped, and the screen stopped at "Super Intense and Ultra-short Laser Device", and then began to scroll, and the speed became faster and faster. The memory module is an ELI project jointly proposed by more than a dozen countries in the European Union and more than 200 scientific research institutions. With the peak power of [-]PW as the goal, create a super-powerful laser scientific device, and then jump to the high-peak-power super-powerful laser devices proposed by China, Russia, the United States and other countries...

The selection of the development and plans of laser devices in various countries in the mind is over, and we are entering the next round, that is, how to manufacture ultra-strong and ultra-short laser pulses!

Sheng Mingan is used to using his excellent memory to take the lead in conducting memory module mind maps before preparing for scientific research work, from the surface to the deep, first laying out a large structure, entering the next structure, and then rolling out...

Go deep layer by layer until the final goal direction is reached——

"Chirped Pulse Amplification Technique."

The ultra-intense and ultra-short laser device affects every research from fusion to astrophysics, providing human laboratories with extreme physical conditions of ultra-high energy density that only appeared in the interior of stars or the edge of black holes before, and also providing humans with unprecedented new experimental method.

It is conceivable how important the ultra-intense and ultra-short laser device is.

In 1960, the first laser came out. In order to obtain shorter and higher peak power laser pulses, technologies such as Q-switching, mode-locking, and extra-cavity grating pair compression were born.

However, the above-mentioned technologies can only obtain ultrashort laser pulses of 6 femtoseconds at most, and there has been no significant breakthrough in this technology for nearly 20 years since then.

Until the chirped pulse amplification technology (CPA) came out in 1985, Mulu, who invented the chirped pulse amplification technology, won the 18th Nobel Prize in Physics together with his student Strickland.

Until today, all ultra-intense and ultra-short laser installations in the world must use chirped pulse amplification technology.

The so-called CPA technology is explained with a simple metaphor: a person is too tall, and the door is too small, and he will break the door if he tries to force it, so people lie down and give him a pair of stilts during the process.

Not only passed the door safely, but also grew taller.

The principle of CPA technology is roughly as above.

"It's really difficult." Sheng Ming'an was almost at a loss. "Maybe we can discuss it with like-minded friends."

After all, the right hand has its own consciousness, and he directly clicks on the LabRoots forum to enter the physics module, and the small speaker in the lower right corner is reminding him that there are too many messages in the background, so he should quickly check or clear them.

Sheng Mingan clicked on it to see that dozens of messages basically came from Blake, either asking him when the next round of the challenge would start or inviting him to participate in the radar simulation modeling challenge.

He replied briefly: [The new research direction is ultrashort and ultrafast laser devices. ]

I thought that Blake was not online, but I didn't expect to receive a reply from Blake in the next second: [Laser device?optics?It appears that you have decided to abandon radar engineering. ]

[Yes. ]

Sheng Ming'an waited for a while, and when he saw that Blake didn't reply, he exited the background and went to the physics module of the forum to look around.

Ten minutes later, Blake sent another message.

[LabRoots Physics Symposium, two days.Today is the first day, the time is from 9:12 am to 3:6 am, from 8:12 pm to [-]:[-] pm, and from [-]:[-] pm to [-]:[-] pm.The link is here, the discussion topic covers the whole field of physics, I think you may be interested. ]

[Thanks.This is very helpful for me. ]

Sheng Ming'an suddenly became interested, and immediately clicked on the link to enter the LabRoots physics seminar module, which is held once a year in winter and spring, and physicists from all over the world can participate.

The platform is open to the virtual classroom, and everyone who is interested in physics can enter the virtual classroom to attend or participate in the seminar.

Sheng Ming'an first entered a seminar on 'quantum world theory', and when he heard one of the discussants say that his research had overturned the uncertainty of quantum mechanics, he immediately exited the virtual classroom.

The uncertainty of quantum mechanics means that the physical quantities of microscopic particles cannot have definite values ​​at the same time. Although this principle has been controversial, more and more experiments have confirmed that it is one of the basic laws that the world follows.

If the uncertainty of quantum mechanics is really overturned, the entire physics community would have been a sensation.

The person who claims to overthrow the uncertainty of quantum mechanics is probably a civilian scientist.

Most of the so-called civil science scholars refer to false scientists, and have no real talents or learning.

After Sheng Mingan quit, he did not rush into the virtual class, but carefully selected and entered the seminar class of 'Chirped Pulse Laser Amplification System'.

There are not many people in the virtual classroom, just a dozen or so.

The lower left corner is the public channel of the virtual classroom, all of which are in English, and the jump is relatively fast.

Sometimes the comments are dense, other times there are gaps.

The blank time is relatively long, which means that the classroom discussion is not very exciting and cannot arouse the desire of others to express.

Sheng Ming'an looked at the topic of "how to manufacture 10PW or even 100PW lasers based on the principle of CPA" in the virtual classroom. One side proposed to obtain high pulse quality femtosecond laser output based on controlling the time domain dispersion and dispersion optimization of the stretcher, and the other One side proposes optical parametric chirped pulse amplification (OPCPA) based on beam deflection scanning bandwidth to obtain high-power laser output.

The two sides argued fiercely, but Sheng Mingan heard that they basically didn't have a point, no wonder the class was so deserted.

Even so, Sheng Mingan stayed in the classroom and listened for half an hour until a third party joined in the debate.

The rule of the virtual classroom seminar is that two parties argue. If a third party raises a question in the classroom, and one of the parties fails to answer and the scientific research proposal is rejected, the debate will be automatically withdrawn.

The new speaker also supports OPCPA technology, and is explaining and providing data: "The scanning bandwidth OPCPA model based on beam deflection changes the non-collinear angle through beam deflection to ensure... the optical parameters of the 800nm ​​center wavelength and 100nm bandwidth signal light. Numeral Calculations……"

The data is so clear, have they done experiments?

Sheng Mingan lifted his spirits immediately, and noticed that the barrage on the public channel gradually increased. Obviously, other online viewers also realized that the content of the new speaker's speech was very rich.

There are two new speakers, Harmon and Joey.

The former is male and the latter is female.

[Harmon and Joy, Ph.D students in UA Optics, have published no less than 7 SCI papers, and I heard that they will participate in the BELLA project of Lawrence Berkeley Laboratory! ]

UA, the University of Arizona, has the strongest optical major.

The BELLA project is a petawatt-level ultra-intense and ultra-short laser device plan proposed by the United States and a French company.

[grass!Doesn't that mean beating all weaklings present? ! ]

[Why take me to fly? ]

[Don't beep, listen to the speech quietly, the opportunity for great gods to speak about their scientific research ideas is rare in ten years! ]

This is true.

Because graduate students and doctoral students do scientific research with their supervisors, and there may be countless people working on the same scientific research direction at the same time, whoever researches and publishes first will be the winner.

And the losers not only lost, they invested countless energy, time and huge scientific research expenses, all of which fell short, and even lost the support of scientific research expenses in the future.

However, the above situation only applies to private laboratories cooperating with scientific research companies, not to Harmon and Joy.

Sheng Ming focused on the thoughts of Harmon and Joey. The time period from [-]:[-] to [-]:[-] was the intermission. He went downstairs to take the bread and black coffee and went back to the room to build the digital model.

The LabRoots Physics Symposium is going on vigorously. Talents from physics departments from all over the world gather here. Young scholars have ideas collision and inspirational discussions in the virtual classroom through the Internet.

Blake sent a private message to Sheng Ming'an: [I saw you in the seminar on CPA technology, aren't you going to play? ]

[The field of strong lasers is still a bit unfamiliar to me. ]

[Don't be afraid to lose face, An, this is a rare opportunity.You should speak up bravely, no one will laugh at your ignorance...]

Sheng Ming'an smiled, and then replied: [Perhaps you will be able to see me play tomorrow. ]

[marvelous!I will join in and record the screen to support you! ]

Sheng Mingan raised his eyebrows, he felt that Blake's support and screen recording didn't seem like support.

But it doesn't matter, Sheng Mingan shrugged, bowed his head and continued the scientific research ideas he summed up from the seminar. Not only was the logic complete, but it also derived more mature and in-depth ideas than Harmon and Joy, who proposed the scientific research ideas, which is incredible.

It's a pity that Blake didn't see this draft paper...Of course, even if he saw it with his own eyes, he probably wouldn't be able to understand it, after all, he wasn't from the same profession.

The sky gradually darkened, and the lights of the city came on one by one, dispelling the night.

The lights of Sheng's villa were also turned on. Chen Jingqiu and Grandpa Sheng were chatting downstairs, and they both looked at Sheng Ming'an's room——

He still has no plans to go out.

***

The busiest night street in Jin City is still lit with colorful lights at one or two o'clock in the morning, and men and women can be seen kissing everywhere in the corners where the lights can't reach. The inseparable entanglement makes you want to take off your pants and do it on the spot .

Fang Tongke sneered, and staggered into the empty alleyway.

He just came out of the nightclub and drank more than a dozen glasses of German stout. He is a little drunk now but it doesn't hinder the surge of adrenaline.

The alleyway he turned into was the road leading to the underground boxing market.

Fang Tongke took over the business from the young master of the Chen family a few weeks ago and led his brothers to cut off a leg, which was an easy job at first.

In the end, I missed, didn't get the money, and was ridiculed, so I felt depressed and needed to see some blood to vent my anger.

"Puppy!" Fang Tongke cursed, "Damn it!"

Staggering, Fang Tongke unbuttoned his pants and planned to put some water on them. He twitched his nose and shivered comfortably. As soon as his pants were zipped up, he caught a glimpse of a figure approaching. .

Out of the corner of Fang Tongke's eye, he caught a glimpse of the tall and thin figure rushing up suddenly, because the light was against the light and the other person was wearing a hood, so he couldn't see his face clearly.

Alcohol corroded Fang Tongke's judgment at this time. When he realized the danger, he felt a pain in the back of his head and passed out.

When he woke up again, there was a heart-piercing pain in his hands and feet.

Looking down, Fang Tongke saw that he lost a little finger on his left hand. Simple hemostasis was done there, and there were only thin blood spots on the ground. It was obvious that the murderer who cut off his finger was a veteran.

Then he looked at his left leg, which was curled up at an odd angle and had been broken.

"Ahhhh-"

The screams came from the box of a luxury nightclub on the same night street. The princess of the nightclub stared at the piece of meat that was chewed by the customer and found something wrong and spit it out. Even with no common sense, she recognized it as a human root finger!

Fresh fingers!

Caught in the sashimi and fed to Chen Shao's fingers by her!

"Ouch!" The princess of the nightclub turned pale and vomited worse than her guests.

A princess next to her came over and took a look. She recognized the finger at a glance, and immediately paled: "Hand...finger——!!"

There was a sudden rush of people in the box, some shouted for the manager, some scolded, and some rushed to the side of Chen Qingliu, who had suffered a disaster... The scene was chaotic, and the crowd panicked. They mistakenly thought that there was a murder, and rushed towards the escape exit.

Among the fleeing crowd, there was a hooded figure.

The figure was thin and tall, like a sharp knife with its handle in its sheath.

***

Sheng Mingan stopped writing suddenly, stared at the troubled value on the draft paper for a few seconds, looked up at the time, and it was two o'clock in the morning!

After the LabRoots academic seminar at twelve o'clock in the evening, he continued to conduct optical laser simulations, trying to solve many puzzles encountered during the seminar, without noticing how fast the time passed.

As soon as he stopped thinking now, exhaustion quickly swept through his body, Sheng Mingan yawned, got up to wash up, passed by Chen Jingqiu's room and found that the door of his room was ajar.

After pausing for a few seconds, Sheng Mingan continued to walk forward.

After walking five or six steps, he stopped, turned around and went back to the door of Chen Jingqiu's room, and through the half-hidden door, he found that Chen Jingqiu was not inside.Suddenly he heard movement from downstairs again, Sheng Mingan went downstairs and saw the light in the kitchen.

Chen Jingqiu was cooking in it, and when he turned around to look for a bowl, he found Sheng Mingan leaning against the door.

Sheng Mingan: "Cook supper?"

"Want to eat? I cooked your portion." Chen Jingqiu took out two bowls: "I saw that the light in your room was on, so I thought maybe you were hungry too."

The aroma of hot food drifted into Sheng Mingan's nose along the air, and his mouth couldn't help but began to salivate.

He stepped forward and saw the dark red on Chen Jingqiu's left cuff, he couldn't help but ask, "Are you injured?"

Chen Jingqiu followed his gaze to see the red blood on the cuff, and showed a subtle smile, but that smile was fleeting, and then turned into a harmless and clean smile.

"It's duck blood. I bought duck blood this morning and made duck blood soup."

Sheng Mingan looked up, and sure enough, he saw two bowls of fragrant duck blood soup on the stove.

It is really a blessing to be able to drink a bowl of steaming duck blood soup late at night in winter!

"Would you like parsley?"

"No."

On the top of the wall, a small lamp.At the dining table, two people leaned over the table and had a conversation.

"Is it tasty?"

"The workmanship is very good. But not as good as my grandfather and my mother."

"It shows that I still have room for improvement."

"Then come on."

"Why are you laughing all of a sudden?" Sheng Ming'an was puzzled, he didn't understand why Chen Jingqiu was smiling so happily.

Chen Jingqiu was also very puzzled: "I've been laughing all the time."

Sheng Mingan glanced at him and said softly, "Fake smiles are different from real smiles."

Hearing this, Chen Jingqiu was slightly surprised, raised his eyelids and stared at Sheng Mingan's side face, his smile had already been put away, his eyes were thoughtful, but he didn't explain the matter.

Because it is not necessary to explain the relationship.

The author has something to say: Say it loudly: Chen Gou is a ruthless person!

Good and normal people should not learn from Chen Gou.

1. Ask for nutrient solution~~

2. In Hong Kong, I feel that I have to talk about it, but it is too watery to put it in the text, so I put it as a science popularization.

Lasers are inseparable from all fields of modern science and technology. If ultra-short and ultra-intense lasers are abandoned, many scientific research fields will be impossible.

Then explain why the pulse amplification is needed, because the femtosecond laser is very short, and 1 femtosecond is equal to 1 quadrillionth of a second, which requires a lot of power, but this power will burn out the laser.

Therefore, after the advent of lasers, there was no new progress for 20 years until the advent of chirped pulse amplification technology.

(It came out in 85 and won the Nobel Prize in 18 years, which means that if you want to win the Nobel Prize, you have to live a long life. The Nobel Prize is only awarded to living people.)

Let me talk about the basic principle of chirped pulse amplification technology (the function of this technology is to obtain ultra-short and ultra-intense laser):

一束飞秒脉冲激光发出（能量不够大）——照到半透镜1（一半透过、一半过不去）——照到反射镜——反射到光栅1（光被分散）——再用光栅2（光分散）——平面镜接收（再照回去）——反射回开头的半透镜——反射到全反镜——光放大器（此时拆成频谱较大的光）——半透镜2——光栅3——光栅4反射——全反镜（反射回半透镜2）——发射好了，就是上面这个过程，最终就获取了超短超强激光。

To put it simply, the laser is dismantled and assembled, the process power is weakened, and when it comes out, the power is increased, so that the laser will not be damaged and the super-power laser can be obtained.

Simply put, the idea of ​​this experiment is actually very simple, but it is really awesome to be able to use such a simple idea to solve a problem that has plagued me for 20 years!

I don't know how these physicists' brains grow, it's amazing.

Moreover, the two physicists who solved this problem actually never thought that they would win the Nobel Prize after more than 20 years!