Detailed Notes on Laser Crystal

Detailed Notes on Laser Crystal

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The most typical laser-Lively scarce earth ions and host media together with some typical emission wavelengths are shown in the following desk:

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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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晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。

活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。

g. a thin disk. As One more example, Q-switched lasers achieve the next population density while in the higher laser amount and therefore are hence much more sensitive to quenching results and Electricity transfer processes; for that reason, a decreased doping density is commonly suitable for these devices. For high-energy lasers, reduced doping densities are sometimes accustomed to limit the density of heat technology, although click here slender-disk lasers work very best with extremely doped crystals. Many laser products never get to the entire functionality prospective simply because such facts have not been thoroughly worked out.

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

热膨胀和收缩系数对确定激光晶体的热透镜特性至关重要。最小化热透镜效应对于在广泛的操作温度范围内保持光束质量至关重要。

Those people surfaces which happen to be handed via the laser beam are Typically either oriented at Brewster's angle or have an anti-reflection coating.

主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。

For different explanations, composite crystals are getting to be well-known. These have a spatially various chemical composition and can be produced with Exclusive designs.

It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It can be fixed in some solid mount which also functions to be a warmth sink. Much larger crystals tend to be useful for aspect pumping e.g. with higher-energy diode bars.

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。