Nonlinear Crystal for Dummies
Nonlinear Crystal for Dummies
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Various crystalline resources are quite distinct regarding their hardness and various Attributes, which identify with which techniques And exactly how quickly they can be Reduce and polished with high quality.
The medium should have a higher transparency (very low absorption and scattering) in the wavelength locations of pump and laser radiation, and very good optical homogeneity. To some extent, this is dependent upon the caliber of the material, based on information of the fabrication process.
The host crystal is way more than simply a means to fix the laser-Energetic ions at certain positions in House. A number of Qualities of the host material are very important:
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。
The maximum achievable doping concentration can depend strongly around the host materials and its fabrication system.
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On top of that, some versatility is shed in experiments if one can not try out absorbers with various thickness or doping focus, as an example, without exchanging the laser crystal by 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 concentration in the obtain medium are most beneficial rely upon quite a few things. The offered pump supply (sort of laser diode or lamp) as well as envisaged pumping arrangement are essential components, but the fabric alone also has some influence. As an example, titanium–sapphire lasers should be pumped check here with superior intensities, for which the form of the transversely cooled rod, operated with comparatively compact pump and laser beam diameter, is more suitable than e.
These tables have only the most typical host crystals; quite a few others exist, that are considerably less commonly applied.
The commonest laser-Lively exceptional earth ions and host media together with some typical emission wavelengths are revealed in the next desk:
A few laser crystal resources are actually shown where some saturable absorber material is included for passive Q switching of the laser.
For various factors, composite crystals have become popular. These have a spatially varying chemical composition and can be made 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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GWU gives all frequent laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG etc.) which has a wide selection of specifications. Besides the perfectly-recognized supplies, modern crystals with excellent Houses like Yb:CALGO can open new horizons for demanding laser apps. No matter whether specific parts for R & D reasons are expected or cost-productive figures in compact, medium or huge batches with in-time supply for the creation line are desired: GWU’s focused assistance helps you to discover the most effective Main factors in your software.
Laser crystals are optical crystals �?usually single crystals (monocrystalline optical materials) �?that are employed as obtain media for sound-state lasers. Usually, They can be doped with either trivalent rare earth ions or changeover steel ions.
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。