After discussing with Academician Wang and others for a long time at the Wenchang launch site, Huang Xiuyuan placed the substitute robot in a special escort fleet, and the person quit the virtual system.

In the first scientific research area of ​​Shanmei headquarters.

He came to Laboratory 06 of Institute 155.

Recently, Huang Xiuyuan has been working in the laboratory, and the research project of this laboratory is laser crystals, namely solid lasers.

In China, it is actually in a relatively leading position in the research and development of solid lasers. The KBBF (potassium fluoroboride) crystal developed by Academician Chen Chuangtian is a special material that has been strictly controlled for export in China for a long time.

KBBF crystal is a nonlinear optical crystal material that can convert other light waves into deep ultraviolet light, and has important applications in electron microscopes and lithography machines.

Huang Xiuyuan, on the other hand, plans to develop a laser crystal that is very important in the future - CSi nanocrystal. It was also developed by a future academician in China. This crystal is a material similar to KBBF crystal, but there are some differences between the two.

KBBF is specifically used to excite deep ultraviolet light in the 167-nanometer band, while CSi nanocrystals are specifically used to excite far-infrared light.

In laser weapons, visible light and short waves are usually not used, but far infrared light in long waves is mostly used.

CSi nanocrystals are specially created for laser weapons. From the name of CSi nanocrystals, you can know that their raw materials are carbon and silicon, and the process is nanoprocessing.

From the near-infrared light high resonance effect of gold nanorods, we can know that the amorphous morphology and special nanostate of the same substance, the resonance effect of the same substance on specific light waves is very different.

Similarly, ordinary carbon crystals and silicon crystals are not high-quality laser materials.

However, through the adjustment of nanoprocessing, Huang Xiuyuan rearranged the nanostructures of carbon and silicon to form two special nanostructures.

One is carbon 24 molecules, which are superimposed by two upper and lower 12-sided shapes, and then this carbon 24 molecules are combined through a special process to form a carbon molecule film.

The other is to form triangular silicon molecules, which must have a characteristic, that is, the three inner corners of the triangle must be 27, 54, 99.

Then fill triangular silicon into the carbon film, continuously superimpose the carbon film thickness until the film thickness is superimposed to 17 mm, and it can be used as an excitation crystal for solid laser.

Why Huang Xiuyuan attaches great importance to this crystal is because this crystal can not only stimulate far-infrared light, but CSi nanocrystals have another advantage, that is, the electro-optical conversion efficiency is extremely high, reaching an astonishing 96.8%.

At present, in the research and development of the laser field, the electro-optical conversion efficiency of various types of lasers is uneven, ranging from 1% to 80%.

For example, fiber lasers, ytterbium-doped semiconductor-doped fiber lasers (pumping wavelength 980nm), are lower than those of neodymium-doped YAG diode-doped lasers (pumping wavelength 808nm).

The electro-optical conversion efficiency of fiber lasers is usually 70% to 80%; the pump YAG is only about 4%; the semiconductor pump YAG and disc-shaped lasers are about 40%; the photoelectric conversion efficiency of carbon dioxide gas lasers is only about 10%.

Most of the current laser weapons are mainly carbon dioxide lasers in long-distance laser weapons. The photoelectric conversion efficiency of about 10% is known to the disadvantages of this laser.

If a 1 kilowatt of laser is emitted, 9 kilowatts of electricity will turn into waste heat and line loss, which will be wasted.

This not only wastes electricity, but also increases the difficulty of power supply, and also makes it difficult to increase the laser power.

CSi nanocrystals are actually fiber lasers in solid-state lasers.

The reason why fiber lasers have such high electro-optical conversion efficiency is that the laser is always contained in the fiber crystal, so there are no other factors that cause laser loss in the laser cavity.

In the past, fiber lasers were difficult to make large-scale ones, at most they were the size of laser pens.

The CSi nanocrystals change this defect and can be made very huge. They can increase the output power and improve the laser condensation by expanding the area and increasing the thickness of the CSi nanocrystals.

On the experimental bench in front of Huang Xiuyuan, there was a cylinder of CSi nanocrystals with a radius of 5 cm and a length of 10 dimeters.

Several experimental assistants carefully held the crystal and installed the crystal in a laser prepared in advance.

Other power supply lines of the laser use the recently developed zero-point superconductor, after the cooling system cools the temperature to minus five degrees Celsius.

Huang Xiuyuan ordered: "Prepare to start the laser test."

"clear."

The wall on one side of the laboratory slowly opened, revealing a test site.

Under the operation of the researcher, a target rose from the test field, marked on it: 100m.

When the researcher pressed the laser's emission button, an invisible and colorless far-infrared light hit the center of the target in the laser more than three meters long.

In less than 0.2 seconds, a fist-sized molten hole appeared on the iron plate target with a thickness of 0.5 cm.

Huang Xiuyuan calmly ordered: "Replace the target."

"yes."

The researcher also replaced a wooden target, which was instantly penetrated by laser light.

Next they tried glass, plastic, ceramic, reflective materials, composite materials, etc., and the lasers penetrated these targets one by one through frequency regulation.

Then there is the distance test, which can be tested at a distance of up to 350 meters. This distance is simply handy for far-infrared lasers.

Huang Xiuyuan estimated that according to the current test data, this laser should be able to achieve rapid destruction of about 500 kilometers in the atmosphere. As for the specific shooting distance, further testing is needed.

If the distance is too far, scattering will occur and the power will gradually decrease.

When Huang Xiuyuan is attracted by the high conversion efficiency of CSi nanocrystals and combined with zero-point superconductors, the overall energy utilization rate will be very high.

If the electric energy of the carbon dioxide laser is used to power the CSi nanocrystal laser, it can generate about 10 times the laser output.

The emergence of this CSi nanocrystal has, to some extent, enabled lasers to move from science fiction to reality.

Inside the atmosphere, there are still no advantages, but when entering outer space, the high conversion efficiency of CSi nanocrystal lasers will play the greatest effect.

It can not only be used on laser weapons, but also on spacecraft heat dissipation and ion engines.

Ultra-high electro-optical conversion efficiency can convert some waste heat into electrical energy and then emit it through a laser to solve the inefficient radiation and heat dissipation problem of spacecraft.

The problem of spacecraft cooling is also a problem for lasers to be used in outer space.

If an old-fashioned carbon dioxide laser is used, 90% of the electrical energy will eventually become waste heat and then accumulate in the spacecraft, causing thermal overload of the spacecraft, resulting in serious problems, and may even directly lead to the scrapping of the spacecraft.

The efficient CSi nanocrystals, combined with the temperature difference power generation system, can basically reduce laser waste heat by 98%, making it possible to be equipped with lasers in outer space.

Similarly, in ion engines, related technologies in this laser can actually be applied.

Or directly using laser light sail thrusters can also achieve high specific impulse, allowing the spacecraft to continuously accelerate in the sky.
Chapter completed!