Laser Crystal Options

Laser Crystal Options

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The most typical laser-Energetic exceptional earth ions and host media along with some normal emission wavelengths are demonstrated in the following desk:

激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。

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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：

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A superior area quality is obviously vital. Specifications of surface flatness are often better than . This allows to stay away from both of those scattering losses and wavefront distortions that may degrade the laser's beam high-quality. Also, scratch and dig specs

g. a thin disk. As One more case in point, Q-switched lasers get to an increased inhabitants density within the upper laser degree and so are thus more delicate to quenching effects and Power transfer processes; consequently, a reduce doping density is usually appropriate for these devices. For top-ability lasers, lessen doping densities tend to be utilized to limit the density of heat technology, Whilst slim-disk lasers perform very best with highly doped crystals. Lots of laser solutions usually do not get to the entire efficiency potential mainly because this sort of aspects have not been correctly labored out.

The host crystal is way more than simply a method to repair the laser-Lively ions at sure positions in Place. Numerous Houses of your host materials are essential:

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。

It is apparent that various programs bring about quite diverse necessities on laser get media. For that reason, a broad assortment of different crystals are utilized, and making the right choice is important for setting up lasers with optimum performance.

Distinct crystalline materials are certainly various about their hardness along with other properties, which ascertain with which techniques And just how easily they can be Minimize and polished with top quality.

The medium ought to have a higher transparency (lower absorption and scattering) inside the wavelength areas of pump and laser radiation, and very Laser Crystal good optical homogeneity. To some extent, this relies on the quality of the material, determined by aspects of your fabrication course of action.

It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It can be mounted in some strong mount which also acts to be a warmth sink. Much larger crystals usually are employed for side pumping e.g. with high-ability diode bars.

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。