The Nonlinear Crystal Diaries

The Nonlinear Crystal Diaries

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Laser modeling and simulation can be used to reliably identify the ideal crystal dimensions, doping density And perhaps values of extra parameters.

人造红宝石激光晶体是首次实现激光输出的材料。可用焰熔法、提拉法或助熔剂法生产单晶。用提拉法容易获得大尺寸优质晶体。

The host crystal is far more than just a way to repair the laser-Lively ions at certain positions in Area. Quite a few Attributes of your host material are essential:

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For quasi-3-degree laser acquire media or even a few-degree acquire media, one normally ought to limit the length to a price which can be as well shorter for successful pump absorption, as reabsorption results would otherwise spoil the general performance. For aspect pumping, extra criteria arrive into play; Moreover productive pump absorption, it is important to get a suitable spatial condition from the gain profile.

g. a thin disk. As Yet another instance, Q-switched lasers achieve a better populace density inside the upper laser stage and so are thus additional delicate to quenching outcomes and Strength transfer processes; consequently, a lower doping density is often suitable for these equipment. For high-ability lasers, decreased doping densities in many cases are utilized to limit the density of warmth era, Even though slender-disk lasers function best with very doped crystals. Lots of laser items will not reach the complete overall performance potential due to the fact this kind of information have not been thoroughly worked out.

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A superior destruction threshold in terms of pulse fluence or peak depth could be important for top-Electrical power amplifiers.

作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：

Which geometry, dopant and doping focus from the obtain medium are most useful rely on quite a few variables. The offered pump supply (form of laser diode or lamp) along with the envisaged pumping arrangement are important elements, but the material by itself also has some affect. By way of example, titanium–sapphire lasers should be pumped with high intensities, for which the form of a transversely cooled rod, operated with comparatively smaller pump and laser beam diameter, is more acceptable than e.

These tables incorporate only the most typical host crystals; numerous others exist, which might be a lot less usually utilized.

The most typical laser-Lively scarce earth ions and host media along with some typical emission wavelengths are shown in the subsequent table:

These surfaces which happen to be passed with the laser beam are Usually possibly oriented at Brewster's angle or have an anti-reflection coating.

Needless to say, it's very desirable that a provided crystal excellent is produced regularly, Despite the fact that distinctive read more laser designs can have a distinct sensitivity to substance parameters.

You can find a wide range of crystalline media, which can be grouped according to important atomic constituents and crystalline structures. Some crucial groups of crystals are:

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Laser crystals are optical crystals �?typically solitary crystals (monocrystalline optical products) �?which can be made use of as obtain media for sound-condition lasers. Most often, They may be doped with both trivalent scarce earth ions or changeover metal ions.

激光晶体（laser crystal），可将外界提供的能量通过光学谐振腔转化为在空间和时间上相干的具有高度平行性和单色性激光的晶体材料。是晶体激光器的工作物质。