Indicators on Laser Crystal You Should Know
Indicators on Laser Crystal You Should Know
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Laser modeling and simulation can be used to reliably decide the optimum crystal Proportions, doping density and possibly values of more 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 medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and also the upper-state life span.
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For quasi-3-degree laser get media and even three-degree gain media, 1 often has to Restrict the duration to a price which can be as well limited for effective pump absorption, as reabsorption consequences would usually spoil the general performance. For aspect pumping, more concerns arrive into Engage in; Apart from economical pump absorption, it is crucial to acquire an acceptable spatial form with the get profile.
g. a thin disk. As A different illustration, Q-switched lasers reach a better population density while in the higher laser stage and therefore are as a result more sensitive to quenching effects and Power transfer procedures; for that reason, a lower doping density is commonly appropriate for these equipment. For high-energy lasers, reduced doping densities are sometimes used to limit the density of heat generation, Despite the fact that thin-disk lasers operate very best with highly doped crystals. Lots of laser items never get to the total effectiveness opportunity for the reason that these facts have not been correctly labored out.
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Additionally, some overall flexibility is lost in experiments if just one can't try out absorbers with distinctive thickness or doping concentration, as an example, with out exchanging the laser crystal itself.
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 of your achieve medium are most useful depend on quite a few components. The obtainable pump supply (sort of laser diode or lamp) along with the envisaged pumping arrangement are important aspects, but the material itself also has some influence. For instance, titanium–sapphire lasers need to be pumped with significant intensities, for which the shape of a transversely cooled rod, operated with comparatively small pump and laser beam diameter, is much more acceptable than e.
These tables incorporate only the commonest host crystals; lots of Many others exist, which might be much less frequently applied.
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All those surfaces which happen to be handed with the laser beam are Generally possibly oriented at Brewster's angle or have an anti-reflection coating.
For various causes, composite crystals have gotten common. These Use a spatially varying chemical composition and might be produced with Exclusive designs.
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。
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It is obvious that unique programs result in very unique demands on laser gain media. Due to this, a broad array of different crystals are applied, and producing the ideal decision is important for constructing lasers with ideal performance.
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。