Nonlinear Crystal for Dummies
Nonlinear Crystal for Dummies
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Diverse crystalline supplies are very unique regarding their hardness and other Qualities, which decide with which techniques And just how conveniently they are often Slice and polished with good quality.
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 as well as the upper-point out life time.
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For quasi-3-stage laser attain media as well as three-level get media, one particular frequently should limit the duration to a value which is far too small for productive pump absorption, as reabsorption outcomes would if not spoil the performance. For facet pumping, further concerns occur into Engage in; Apart from efficient pump absorption, it can be crucial to get an acceptable spatial shape of your obtain profile.
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A higher harm threshold with regards to pulse fluence or peak depth might be crucial for prime-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 concentration in the get medium are most useful depend on numerous variables. The available pump source (style of laser diode or lamp) and also the envisaged pumping arrangement are essential variables, but the fabric alone also has some influence. As an example, titanium–sapphire lasers need to be pumped with substantial intensities, for which the shape of the transversely cooled rod, operated with somewhat small pump and laser beam diameter, is more appropriate than e.
It may be oriented for in close proximity to perpendicular incidence of the laser beam, or at Brewster's angle. It can be preset in certain good mount which also functions for a heat sink. Bigger crystals are often used for side pumping e.g. with higher-ability diode bars.
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Individuals surfaces that are handed from the laser beam are Commonly either oriented at Brewster's angle or have an anti-reflection coating.
For various reasons, composite crystals have become popular. These Have got a spatially various chemical composition and can be created with special styles.
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 apparent that different purposes produce pretty unique necessities on laser get media. For that reason, a broad variety of various crystals are applied, and producing the correct option is important for constructing lasers with the best possible effectiveness.
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。