Chapter 1047

It's no wonder Aziz was surprised by the brain fragmentation, because he knew how difficult it would be for nb-6600dl to compress the laser to 355nm.

Although nb-6600dl adopts the same structure of laser generation, reflection and refraction as photolithography, nb-6600dl is essentially different from photolithography.

Think about it and know that the laser application material of lithography machine is high-purity silicon, while nb-6600dl application belt material is alloy containing nickel, rhenium, niobium and other metals.

In other words, the laser energy density of nb-6600dl is much higher than that of the lithography machine, otherwise it is impossible to make process holes in such high strength metal.

If the laser energy is large, then according to Planck's formula, the longer the laser wavelength, the better. However, this brings an unavoidable difficulty, that is, the compression of long wavelength laser.

Just like the water in the water pipe, how to spray the water farther and more accurately, either increase the water pressure at the output end, or narrow the nozzle to increase the water pressure.

The same is true of laser processing. If the high-energy laser is not compressed, the holes will be made instead of holes.

At present, there are many lasers that compress the laser wavelength all over the world. The problem is that most of the lasers do not have long durability for high energy density lasers. For example, the commonly used carbon dioxide lasers, once the energy density of the laser increases, either the internal carbon dioxide consumption of the laser will increase exponentially; or they can't bear to explode directly.

Therefore, this kind of CO2 laser is rarely used in this kind of high-energy laser equipment. There is no way. Before the workpiece is made, maybe three or four CO2 lasers will have to be replaced.

It's no different from having to change four engines before driving 300 kilometers. The cost is too high.

But now, the nb-6600dl that Zhuang Jianye took them to visit can not only compress the high-energy laser to 355 nm, more importantly, Aziz and others have been in for nearly 20 minutes, and the nb-6600dl is almost finished processing a flame tube. But the most easily damaged laser has not only no problems, but also continues to work vigorously, much better than Aziz when he was young Twenty beautiful girls are sleeping with each other, but they are still fierce.

What does that mean?

Tengfei group has found a new high-energy laser compression method which is stable, sustainable and has been applied in industrial production.

Aziz is not the only one who is aware of this. Other insightful aviation experts of the two countries have thought of this problem. When they look at nb-6600dl, their eyes are different, just like seeing alien creatures. Their eyes are full of real surprise and unknown doubts.

"Mr. Zhuang, how did your nb-6600dl do it?"

Aziz knew that he was surprised just now. He took two deep breaths, stabilized his old heart, and asked again, "I mean, how can you compress the high-energy laser penetrating the alloy to 355 nm?"

"Oh, we use a kind of nonlinear solid material called lithium borate crystal as the main material of the laser. Of course, the name is too long, so we generally call it LBO crystal, which can achieve three times the frequency doubling ultraviolet laser." Zhuang Jianye replied with a smile.

"Solid state lasers with nonlinear crystals? Have you come to this point in China? "

Aziz is really surprised to know that the only countries in the world that can produce solid-state lasers independently are the United States and Europe, among which the technology of the United States is the most advanced.

KDP crystal, the so-called potassium dihydrogen phosphate crystal, was developed as early as the 1960s. With the progress of technology, Americans have accumulated a lot of technical experience and patent barriers in KDP crystal, which is also the base for Americans to take the lead in the optical field and dare to propose star wars in the mid-1980s to develop so-called laser weapons against Soviet nuclear missiles Where is it.

Because the ultraviolet laser generated by frequency doubling of high-energy laser through KDP crystal has strong energy, enough to destroy any spacecraft flying in outer space, including nuclear warheads.

Because of this, the Americans have very strict control over such high-end optical materials, and the top-level optical materials are not exported at all. Only the second generation products eliminated by the military will spread among the allies of the United States in a controlled way under the operation of some technology companies.

Europe is as like as two peas of water, and the solid liquid crystal laser of the KDP has been built up. The performance of the solid state laser is lagged behind by the US. It is more important that the technology path in Europe is the same as that in the US. Therefore, it is necessary to pay a huge amount of royalty to the US every year. The two is the European market.

The situation in Europe is fairly good. Although the United States pays the patent fee, it is in a special transatlantic relationship. There are not many restrictions in other fields except for restricting the use of KDP crystal related technology in Europe in outer space.

Japan, South Korea and other countries don't have such good treatment. Not only does the patent fee pay, but the application fields of KDP crystal are also restricted by the United States, especially in the fields that have direct conflicts with the relevant enterprises in the United States. Let alone Japan, South Korea and other countries, they are able to explore a hair, and the Americans can start a prairie fire and burn you to ashes.Let's not say far away. A few years ago, Japan wanted to launch a satellite to monitor the ocean dynamics around Japan. It needed to carry a laser detection device and use KDP crystal. At that time, Japanese optical giant Canon felt that this project was purely civilian. With the authorization of the United States, it should be able to produce independently. There was no need to take off your pants and fart to tell American Dad A sound, so the production of their own ideas.

As a result, the American father was furious when he got the news. He didn't expect that Japan's good grandson's wings had hardened. Today's production of KDP crystal, the core of civil satellite, won't tell him. Will he have to hide it from himself when he develops a space-based laser weapon tomorrow?

Without saying a word, they directly seized all the KDP crystals produced by canon on the ground that Canon violated the agreement. Then the special search team of the Tokyo local procuratorate entered canon and the Japanese space planning agency, and a big corruption case was soon involved.

Finally, Canon's director of optical affairs hanged himself, the director of optical detection equipment of Japan's space planning agency was arrested and jailed, and Japan's $400 million monitoring satellite was cancelled.

Even an American with civil equipment is so oppressed, let alone others, but countries all over the world have no way to deal with the United States. Who can let others hold the core technology?

And core technology means technological hegemony.

But now the nb-6600dl of Tengfei group grandly produces the combustion chamber of aero-engine, which is an aero-engine. Whether it's military or civil, it's a taboo valued by the Americans. The Chinese actually use the solid-state laser that the Americans strictly guard against.

What does that mean?

Tengfei group has completely broken the American technology monopoly!