Black Technology Refresher Manual

Sheng Mingan grabbed the tail of the flame that exploded and burned from the stars in the universe before it burned out.

He jumped up from the bed, rushed to the desk with bare feet, took out the pen, draft book and computer from the bag, inserted the hard disk into the USB port, imported the required software and put it aside, opened the draft book and started writing.

The tip of the pen paused when it was one centimeter away from the white draft book, Sheng Mingan closed his eyes tightly, recalling the incomparably thrilling inspiration at that moment.

That beam of inspiration washes over the cerebral cortex like warm water, stimulates the hypothalamus to regulate and secrete adrenaline, and the unspeakable excitement travels through every blood vessel and every cell in the whole body.

Sheng Mingan took a deep breath, opened his eyes, and began to disassemble the ultra-powerful ultra-short laser system, which is divided into oscillators, stretchers, amplifiers, and compressors.

Each system module can be updated and improved, so as to obtain new technology, and use this new technology to obtain high peak power laser device.

Firstly, ultrafast laser pulses can be obtained from the oscillator using mode-locking technology, and the laser is incident on the titanium sapphire in the oscillator, and then stretched by the stretcher——

From the above, we can start from the Ti:Sapphire crystal of the oscillator and the stretcher, and obtain a certain high peak power laser device by developing a large-diameter Ti:Sapphire crystal and analyzing the dispersion algorithm of the stretcher.

The amplifier based on the principle of chirp amplification technology can make the laser pulses that have passed through the oscillator, the stretcher, and the stretched laser pulse obtain sufficient energy, and this step is a hot research direction that has attracted much attention in the laser field.

The CPAOPCPA hybrid amplifier program of Shenshi Institute of Optics and Mechanics is to choose the amplifier as the research direction!

The gain bandwidth and conversion efficiency in the laser amplifier determine the peak power of the laser pulse, and the chirped pulse amplification and chirped pulse optical parametric amplification schemes have the characteristics of high efficiency and large bandwidth respectively, but the two characteristics cannot be compared with one technology at the same time. plan.

Wang Wenya and the others tried to use the hybrid amplifier to have the characteristics of two amplified lasers at the same time, and it can indeed achieve a strong laser output at the PW level.

Sheng Ming'an remembers that Huaguo announced the realization of 17PW strong laser output in 10 and the completion of the laser device in 18, but this hybrid amplifier solution is absolutely impossible to achieve Aiwa (1000PW) laser!

Because the two strong laser amplification schemes have the defects that the CPA energy-level gain medium does not support ultra-broadband cycle-level strong laser pulses, and the conversion efficiency of OPCPA is severely restricted by nonlinear backflow.

Or rather, the bottleneck!

As long as the above-mentioned bottlenecks are overcome and a new solution with both high CPA efficiency and OPCPA ultra-broadband characteristics is proposed, an exawatt-level laser device can be realized!

'system. "Sheng Ming'an called out the black technology system in his mind," replaying the pre-research video of the attosecond ultrashort pulse XFEL light source. '

System: [Received. 】

The "attosecond ultrashort pulse XFEL light source pre-research video" in the second level of the black technology system was replayed in Sheng Mingan's mind. Understand!

"So it is."

Sheng Ming'an muttered to himself, his eyes sparkling, and the ballpoint pen in his hand kept on pouring all the inspiration he got in an instant onto the pen tip and paper. Within this square inch, the building of a new laser pulse amplification scheme was gradually completed.

The foundation of the building is being laid, the light of inspiration is burning to the extreme, and the "attosecond ultrashort pulse" technology in the mind is being cracked and absorbed, and while being integrated, it is moving towards the direction of self-innovative technology.

"Optical parametric, high-frequency light and low-frequency light interfere with each other in nonlinear media, and are amplified due to the difference frequency effect... nonlinear, parametric, and backflow problems in the parametric process can be eliminated in the crystal part."

Sheng Mingan wrote down the OPA crystal, and then the nonlinear optical quality calculation formula and the available aperture data of the traditional crystal, and substituted these data into a series of formulas of the CPA scheme and the CPAOPCPA scheme to calculate the laser pulse of the highest energy level.

Turning to the fourth page, Sheng Ming'an didn't stop, and the black characters jumped out on the paper.

"Update solution: replacing traditional OPA crystals."

"Replacing the optical parametric crystal with a quasi-parametric crystal, and substituting the data, the requirements of the quasi-parametric crystal are as follows: nonlinear optical properties can absorb idler light, and physical and chemical stability..."

"Construct a quasi-yield process similar to the energy level amplifier, which is insensitive to pump laser and phase mismatch, and ensures the high efficiency and stability of the laser system—"

At this point, Sheng Mingan stopped writing and turned on the computer to create the model, but the capacity of the laptop is too small, and once some software is running, the computer will freeze.

There was no other way, Sheng Mingan had no choice but to draw directly on the draft pad with his terrible computing power.

"Figure 1, the change of signal light and idler light with the injection intensity of the quasi-parametric chirped pulse amplification technology. Figure 2, the change relationship of the quasi-parametric..."

The coordinate map and the curve of the seemingly endless mountain peaks in the center of the drawing were drawn on the draft paper, which looked very simple at first glance, but actually contained a large number of complicated calculations.

“I(z)=I(0)[cosh^2(gz)+(α4g)^2sinh^2(gz)]……”

"To sum up, traditional OPA crystals can be replaced by YCOB crystals!"

Sheng Mingan worked hard at his desk, and the electronic hour hand on the wall moved forward silently. The sky outside the window was covered with a magnificent sunset glow, and a few rays of starlight shone faintly in the east.

Time has always passed by quickly, and it is night in the blink of an eye. The night sky is covered with jewel-like stars, which complement each other with the lights of the city one by one, forming a dazzling brilliance between the sky and the earth.

Time turns and stars move is just an idiom, but it does not have the slightest sense of disobedience when it is used on Sheng Mingan, who forgets to eat and sleep.

When night came, the lights in Sheng Ming'an's room were turned on all night.

When daytime came, Sheng Mingan called the room service to bring up all three meals a day, and he only left his seat once.

The stars are playing and the lights are on.

The time has come to the night of the second day, and Sheng Ming'an is cracking the most critical technical part, even if he eats and clothes, he forgets the time!

During the period, the room service of the hotel was worried that something would happen to him in the room for a long time, so he knocked on the door to inquire. Sheng Mingan, whose inspiration was suddenly interrupted, became irritable instantly.

If it is not for good upbringing to restrain his temper, I am afraid he will be anxious and out of control.

But because of this, the room service determined that he was still alive, so he didn't bother again.

When Sheng Mingan was in the hotel room and forgot to eat and sleep to solve the new high-power pulse laser solution, Professor Zhang Qunfang was also meeting with the Shanghai Municipal Party Committee with his former colleagues to discuss the future ultra-intense ultra-short laser device and more important hardware. Future plans such as X-ray free-electron laser devices.

After Wang Wenya's scientific research work came to an end, she realized later that she hadn't seen her junior for a long time.

Wang Wenya wanted to contact Sheng Ming'an, but found that there was no contact information. Fortunately, she knew the hotel where Professor Zhang and his junior were staying.

So I called the front desk of the hotel to inquire, and got an answer: "Mr. Sheng stayed alone in the room for a day and two nights. He said he was busy and asked us not to disturb him."

"What are you busy with?"

"Not sure. But the computer is on, maybe it's playing a game."

The room service viewed Sheng Mingan's computer page with the software running at the time as a game page, and Wang Wenya, who had a similar routine, soon realized that her little brother might be inspired.

After hanging up the phone, Wang Wenya shook her head and sighed, "My little brother is amazing."

A colleague who is also a researcher at the Institute of Optics and Mechanics next to him raised his head: "I heard that Mr. Zhang has accepted a young apprentice, but I don't know the name yet. What is his name? Graduate student or master?"

"Sheng Ming'an. Not a graduate student, nor a master's degree, but a high school student."

"? What kind of genius is this?!"

"Hey, take out your scarf on your phone and search for the keywords of Jinzhou Viaduct. You'll know after reading it."

November was the critical period for the results of the optical machine, and everyone was so busy that they missed the hottest news at that time.

The colleague immediately took out his mobile phone to search, and after reading it, he suddenly felt melancholy: "I seem to be old, and I feel like a rookie."

Wang Wenya snorted.

The colleague became curious: "Why does he worship Mr. Zhang as his teacher? Shouldn't the building get flooded first to get the moon-seek Mr. Shen?"

Wang Wenya: "Young junior brother wants to take an exam on our optics."

"Very capricious." The colleague shook his head: "He is very talented in radar engineering, why did he give up? Besides, optics is not easy." He subconsciously stroked his bald hairline, feeling so sad that he almost burst into tears : "Recalling the past, the years when the hair was thick."

Wang Wenya: "I think my younger brother can achieve no less achievements in the field of optics than in the field of radar."

"Is there any basis?"

"No. But," Wang Wenya said with a smile, "When my junior brother looked at the 0.61PW laser beam, his eyes were as bright as stars falling into the sky."

"Your words are too literary."

"right."

The two smiled and walked towards the cafeteria.

***

half a month ago.

In a dormitory of Hong Kong Baptist University, a roommate who was quietly playing with his mobile phone suddenly raised his head and said, "Second brother, is this video yours?"

Jin Demin leaned over to look at it, and saw that it was a video he edited more than a month ago, so he nodded.

The roommate said: "The video was stolen."

Jin Demin: "?" He leaned over and said, "Let me see... Park Young-taek? It sounds like a good name. Did he move my video without watermarking it?"

"It's not just that there is no watermark, he directly regarded the video as his own, but changed the bgm of Bangziguo, and then said that the person in the video who slapped the UA optical major in the United States is from their Bangziguo."

Jin Demin immediately pulled his face down in displeasure: "What is he from the country? This is from our country! His personal information clearly states that he is from the country of China. I watched his performance at the LRs seminar the whole time. Everyone knows that he is from China!"

"Send me his number, and I'll chat with him privately."

The roommate sent him the number, and Jin Demin immediately logged into his Youtube account, privately poked the guy named Park Young-taek, and checked his personal information by the way.

This is a well-known YouTube host. He is famous for editing videos of the customs of the country and the humanities of the country. The rhythm and picture processing of the video are excellent, attracting many followers from all over the world.

Jin Demin also discovered that this video made by Park Young-taek three months ago was also a video of 'An', but it was a video of 'An' and others doing a radar simulation modeling competition, which was also used by Park Young-taek for his own use. Even the people in the video They have all become their countrymen.

Jin Demin immediately felt disgusted with this YouTube owner.

And Park Yingze quickly responded to the message, Jin Demin clicked in to take a look, and was so angry that he cursed out with a 'fuck', and his roommate looked at him worriedly in fright.

"Fucking shameless! Damn it! He said that he asked me to show evidence that the creator of the video was me. I posted the timeline of making the video, but he said that the person in the video is their stickman, unless I show proof Prove that he is a Chinese!"

Jin Demin is so angry that his liver hurts, what the hell does he need to prove?Prove that his father is his father and his mother is his mother?

He logged into LRs and found 'An', took a screenshot of the picture of the country's origin on his personal profile and sent it to Park Young-taek, but this stick started to play dead.

Jin Demin sneered, and backhandedly posted the incident on his YouTube account.

This stick surnamed Pu has fans, and so does he!

Not long after the incident was posted on YouTube, compatriots and netizens from other countries immediately went to Park Yingze and reported it. After twelve o'clock in the evening, Jin Demin went to watch it again and found that the grandson deleted the video but did not apologize.

"Fake death again."

Jin Demin sneered, feeling that the matter was over.

But one day half a month later, when Jin Demin returned to the dormitory, he was stopped by a roommate with a dignified expression: "Second brother, let me tell you something, you have to make sure you stay calm and don't get too angry."

Jin Demin frowned: "What's the matter?"

"Do you still remember that stick surnamed Pu?"

Jin Demin nodded.

The roommate said: "He deleted all the videos and re-made a video, which is specifically for the pull-up analysis of the video you made, and analyzed your "god" editing and splicing from various angles, saying that you deliberately shaped a video. A gifted student who belongs to our Chinese people maliciously tramples on UA ​​doctoral students in the United States."

Jin Demin couldn't believe it: "Does this person have any face?"

Roommate: "Tell me a joke, the people of Bang Country will lose face."

"..." Jin Demin took out his mobile phone: "Does anyone believe it?"

"There are a lot of people who believe in it. The post you posted about him was reported and deleted two days ago. After it was deleted, he sent the video. The time difference between before and after is less than a day."

Jin Demin went in and took a look, and was speechless.

Under the video, there are really many netizens who believe what Park Young-taek said, and Park Young-taek is even more ridiculous, saying something like 'I don't want to see the arrogant thief complacent', 'the glory that a truly respectable genius deserves'

Wait for the high-sounding words.

However, the netizens who didn't know the previous situation all praised him for his kindness, and also called the Hua people a thief, arrogant and inferior.

Many people have already touched Jin Demin and scolded him.

Jin Demin: "I'm applying to restore the video now." He was still puzzled, "Why do netizens trust the stick surnamed Park?"

Roommate: "Because we all know that UA's optics major is the strongest on the surface of the world, and the doctor of optics with the strongest surface lost to the Hua people who were competing with others in 'radar simulation modeling' two months ago!"

"This..." Jin Demin was speechless, but he still silently edited and issued a clarification statement.

It's just that no one believed it.

On the contrary, because of this statement, netizens were angered. They thought he was too dishonest and had already begun to insult and even make racially discriminatory remarks.

"Or, keep silent." The roommate said, "Just wait until the limelight passes."

Jin Demin looked at the insulting remarks on the screen, and his whole body was depressed. After a while, he shook his head and said, "Wrong is wrong! Right is right!"

He gritted his teeth and said, "I believe it! This young Chinese scholar named 'An', because I witnessed it with my own eyes..."

Because I witnessed with my own eyes the young man lying on the desk immersed in scientific research in the dim room, from morning to night, he did not leave the desk for eight hours!

Because I saw him confidently and calmly responding to the doubts of young scholars from all over the world!

Because I saw with my own eyes that the UA doctoral student who is known as "the most powerful optics on the surface" gave a thumbs up!

Because I saw the amazement that filled the screen with my own eyes!

So, "I stand by my decision!"

***

Jin Demin is not fighting alone. His fans from mainland China watched the whole public opinion war that reversed black and white. Feeling that his own appeal is not enough, he also made a video explaining the ins and outs, and put it on L stand.

He has no fans, anxious but helpless.

But because his video contained the word 'technology', L Station's big data search automatically recommended a technology channel, which happened to push the video of Jin Demin on YouTube to the homepage.

Seeing this, the fan thought about it, and immediately sent a private message to the UP master on both L station and Bibo, explaining the ins and outs, and the fact that the original video owner and the teenager in the video are being paced, and that the dead stick method is disgusting and so on.

The owner of UP is also a popular science blogger, and the bib is his base camp. When he saw this private message, he found out that the fans were telling the truth after many verifications. Station L.

The UP owner has millions of fans, and most of the fans are straight men. After watching it, go straight to Park Young-taek.

You must know the mouth of a straight man, the knife used to kill people, and his mother's poison.

Especially since they have pictures and videos on their side, they quickly scolded Park Young-taek in the Youtube to the point of confusion.

At this time, Park Young-taek, who was in his personal room in a university dormitory in the United States, was not angry, but happy when he saw that the YouTube channel had completely fallen into a battlefield of endless quarrels.

Because both videos and popularity represent a steady stream of money coming into the account!

He clicked the mouse: "Everyone knows how good UA's doctoral students in optics are. How can there be young scholars who beat UA's doctoral students in optics in a country with no outstanding optical majors?"

"It wasn't edited on purpose, or there was a team behind it to help."

Even if it is true, so what?

All it takes is someone not to believe it!

As long as the Americans don't admit it, it's fine. If the other party makes a clarification, then just report the video and take it off the shelves as before.

Pu Yingze didn't care, and thought of a good way to make a lot of money!

He narrated the matter from start to finish and posted it on the domestic nave. By the way, he spent some money to buy trending searches, and then watched the popularity rise a little bit. Bangzi Nationality, who is naturally hostile to the Chinese, went to YouTube to vent passionately.

The oil pipe heat is gradually rising.

Park Yingze calculated the money he could get, and went out to the nightclub contentedly.

***

The quarrel between Youtube and Bangzi.com's hot search gradually fermented, and some people began to move back to China.

However, because some domestic masters also raised the same question, expressing their disbelief that UA optics doctoral students will lose to Huaguo young scholars who were still competing in the radar field for simulation modeling two months ago, so the domestic heat is not particularly fermented.

At present, it is only spreading in young academic circles.

***

When Zhang Qunfang and Wang Wenya knocked on the door, Sheng Mingan's plan was in the final stage.

When the two people outside the door did not get a response for a long time, and were about to slam the door and call the police, Sheng Ming'an just put the last touch on his new plan for [-]-petawatt-level laser pulse output.

Skyscrapers are completed.

At the same time, with a bang, Zhang Qunfang and Wang Wenya broke into the door. Wang Wenya still had a mobile phone between her shoulder and head.

Before Sheng Mingan could appreciate his plan, he was frightened, and suddenly turned his head to meet Zhang Qunfang's eyes.

Both sides looked at each other, speechless for a long time.

Professor Zhang Qunfang's complexion was not very good, and Wang Wenya shrank her neck, secretly speechless.

Just by glancing at the bread paper, coffee machine and paper balls all over the floor, the drawn curtains and the lights that were turned on in broad daylight, they knew that Sheng Ming'an had been alone in the hotel room for at least three days!

For three days, I didn't go out, didn't take a shower, and lived on stiff bread and coffee!

In this case, it's really lucky that Sheng Ming'an is a beauty, otherwise he would be sloppy.

Wang Wenya looked at Sheng Ming'an, the junior who had been up for three days and two nights, his complexion was not very good, his eyes were a little dark, and the clothes he was wearing were a little wrinkled, other than that, he still looked good.

Also because of the mental head, and a little more decadent temperament.

Wang Wenya lamented that Junior Brother is really a beauty.

The most exciting and energetic moment when he caught the aura has passed. The sleepless calculations for three consecutive days and two nights made Sheng Mingan exhausted his physical and mental strength, and his exhaustion flooded him like a wave.

"Professor Zhang. Senior Sister Wang." Sheng Mingan asked, "Why are you here?"

Zhang Qunfang frowned, with a very disapproving expression: "Even if you love scientific research, you should pay attention to your work and rest! Physical health is the first capital of scientific research work!"

Sheng Mingan was taken aback for a moment, then nodded, "I know. I keep exercising."

Zhang Qunfang considered that he was young after all, young and frivolous and prone to paranoia, so he stopped after a few words of advice.

Sheng Mingan sniffed the smell of his collar, immediately wrinkled his face, raised his hand and said, "Professor, Senior Sister, I want to take a bath first."

Zhang Qunfang and Wang Wenya smiled angrily, and went out to the room next to Sheng Mingan's room, discussing the CPAOPCPA hybrid amplifier plan and the latest experimental progress.

Five minutes later, Sheng Mingan knocked on the door of Zhang Qunfang's guest room with the brand new plan he had sorted out, and handed the plan directly to Zhang Qunfang.

"Professor, help me see. Is the plan feasible?"

Zhang Qunfang glanced at it, but didn't see anything, just smiled and said, "Is this the result of your kid shutting himself in the room for three days and two nights?"

"correct."

Sheng Ming'an, who is sleepy and exhausted, always looks extra lazy.

Wang Wenya smiled and admired it for a while, "Professor, let me take a look at it later. I have to observe and emulate the first research result that my younger brother transferred to our field of optics."

Sheng Mingan lowered his eyelids and stood by the side waiting.

Zhang Qunfang opened the draft book and began to read it. At first, he didn't pay much attention to it, thinking that after all, it was Sheng Mingan's first scientific research achievement in the field of optics, and no matter what, it couldn't dampen the confidence of the young students.

When he turned to the second page, his expression became extremely solemn, he even straightened his back, and told Wang Wenya: "Go and get the glasses on my desk, as well as the pen, the draft paper, and... Alright, I'll go by myself."

Wang Wenya: "..."

Zhang Qunfang went to the desk and sat down, turned back to the first page, put on glasses, picked up a pen, and calculated without saying a word.

That is clearly a solemn attitude when facing a scientific research project of interest!

Wang Wenya couldn't help but wonder what scientific research results Sheng Mingan came up with, she leaned over and asked in a low voice, "Junior brother, what research direction are you pursuing?"

Sheng Ming'an tried his best to hold his eyelids, and his nasal voice was thick: "A brand new solution for the Ewa-level laser pulse output system."

"???"

"!!!"

Wang Wenya suddenly turned her head and stared at Sheng Ming'an, she was so shocked that she almost lost her voice, and after a long time she asked in a dull voice: "Junior brother, you just came up with a concept, right?"

Sheng Ming'an thought for a while and said: "It's a little clearer than the concept. I made a complete algorithm, from the parametric crystal gain medium to the nonlinear backflow of the amplifier. The basic data, digital-analog and physical-model are all listed in it. A new scheme for parametric chirped pulse amplification."

"However, it needs to be modeled under laboratory conditions, and it is confirmed that it is feasible before the plan can be considered approved."

Even if it passes, it still needs to solve the problem of having to build a huge ultra-short and ultra-intense laser that occupies too much area because the power is too high.

However, this is already awesome!

If the path proposed by Sheng Ming'an is correct, it is equivalent to building a path to the Ewa-level pulse laser for them in advance!It means that Huaguo will achieve corner overtaking in the laser field for at least 20 years!

If the application of chirped pulse technology is not too basic, the results of his brand-new solution may not be inferior to CPA!

The way Wang Wenya looked at Sheng Ming'an was almost like looking at a monster.

At this time, Zhang Qunfang by the desk had just finished solving the first question, and took the time to turn around and ask Sheng Mingan: "Is this the result you made alone?"

"Yes." Sheng Mingan nodded.

"Why would you want to study an exawatt laser solution?"

"I saw Senior Sister Wang use the CPAOPCPA hybrid amplifier to control the ultra-strong and ultra-short laser device to emit a beam of amplified laser pulses, and a thought flashed in my mind. Also, Senior Sister Wang said that the two amplifiers of CPAOPCPA have their own advantages and disadvantages, so We had to mix the two to produce 10PW laser pulses."

"So I thought, what if you could get rid of the flaws of both amplifiers and combine premium performance."

In fact, he was able to quickly solve the defects because of the pre-research video of the ultrashort pulse laser device of the black technology system.

Just seeing the operation of the laser device inspires inspiration, how much is Sheng Mingan loved by the gods?

Inspiration is like fireworks, fleeting in an instant, and many people don't even have time to discover it.

But Sheng Ming'an not only found it, but also caught it!

Sheng Ming'an, who has grasped the inspiration, is just a beginner who has just stepped into the field of optics!

And it was such a beginner who dared to rely on that illusory inspiration to lock himself in the room for three days and two nights, trying to solve the problems that have plagued countless physicists around the world!

In the end, did he really solve it? !

Zhang Qunfang stared at Sheng Mingan, a question suddenly appeared in his mind, is the student in front of him a genius?Or crazy?

The author has something to say: Oh, An Zai won't be bald even if he stays up all night.

My pup can't be bald.

PS: I actually don't dare to comb my hair now.

PPS: Although the sticks in the article are very low-intelligence and shameless, don’t doubt, they are really shameless :)

"The CPA-level gain medium does not support ultra-broadband period-level strong laser pulses, and the conversion efficiency of OPCPA is severely restricted by nonlinear backflow" - excerpted from the Internet.