Detailed Notes on Laser Crystal
Detailed Notes on Laser Crystal
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These ions help the crystal to amplify light-weight at the laser wavelength via stimulated emission, when Electrical power is supplied on the crystal by means of absorption of pump mild (�?optical pumping
为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。
激光晶体中活性离子的作用是什么？ 活性离子在激光晶体中负责通过受激发射产生激光光线。
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：
激光晶体由发光中心和基质晶体两部分组成。大部分激光晶体的发光中心由激活离子构成，激活离子部分取代基质晶体中的阳离子形成掺杂型激光晶体。激活离子成为基质晶体组分的一部分时，则构成自激活激光晶体。
A higher surface area high quality is naturally essential. Specs of surface area flatness are frequently a lot better than . This will help to prevent both of those scattering losses and wavefront distortions which might degrade the laser's beam high-quality. Additionally, scratch and dig specs
g. a thin disk. As A different instance, Q-switched lasers attain a better inhabitants density during the higher laser stage and are hence more delicate to quenching results and energy transfer processes; for that reason, a lower doping density is frequently appropriate for these products. For top-electrical power lasers, lower doping densities in many cases are utilized to Restrict the density of warmth generation, although slim-disk lasers perform most effective with really doped crystals. Numerous laser items tend not to get to the whole functionality opportunity for the reason that these information haven't been effectively worked out.
The host crystal is far more than simply a way to repair the laser-Lively ions at particular positions in House. Many Houses on the host materials are crucial:
量子效率是发射光子数量与吸收光子数量的比率。高量子效率表明更大部分吸收能量被转化为激光光束，有助于提高激光的整体效率。
Those surfaces which happen to be click here passed because of the laser beam are Typically possibly oriented at Brewster's angle or have an anti-reflection coating.
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It could be oriented for close to perpendicular incidence from the laser beam, or at Brewster's angle. It could be fixed in a few strong mount which also functions like a heat sink. Larger sized crystals are usually used for aspect pumping e.g. with high-electric power 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。