Laser Crystal - An Overview
Laser Crystal - An Overview
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Laser modeling and simulation may be used to reliably decide the optimum crystal Proportions, doping density And perhaps values of extra parameters.
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-state lifetime.
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 most attainable doping concentration can rely strongly on the host content and its fabrication method.
g. a skinny disk. As another illustration, Q-switched lasers reach a better inhabitants density inside the higher laser level and therefore are hence much more delicate to quenching results and Electrical power transfer processes; for that reason, a lessen doping density is often appropriate for these products. For top-energy lasers, decrease doping densities will often be used to limit the density of heat era, Whilst thin-disk lasers perform ideal with really doped crystals. Many laser goods usually do not reach the whole general performance potential since this sort of information haven't been appropriately labored out.
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Moreover, some versatility is shed in experiments if one particular can not Check out absorbers with diverse thickness or doping focus, one example is, without having exchanging the laser crystal alone.
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 focus in the get medium are most advantageous depend upon quite a few elements. The readily available pump resource (kind of laser get more info diode or lamp) plus the envisaged pumping arrangement are crucial elements, but the material alone also has some influence. One example is, titanium–sapphire lasers ought to be pumped with higher intensities, for which the form of a transversely cooled rod, operated with reasonably compact pump and laser beam diameter, is a lot more suitable than e.
It may be oriented for around perpendicular incidence with the laser beam, or at Brewster's angle. It might be preset in certain solid mount which also functions as a heat sink. Larger crystals are often utilized for side pumping e.g. with higher-energy diode bars.
The most common laser-Lively exceptional earth ions and host media together with some standard emission wavelengths are shown in the subsequent desk:
Those people surfaces that happen to be passed with the laser beam are Usually possibly oriented at Brewster's angle or have an anti-reflection coating.
Not surprisingly, it is very appealing that a presented crystal high-quality is created persistently, Whilst various laser patterns may have another sensitivity to material parameters.
There's an array of crystalline media, which may be grouped in accordance to special atomic constituents and crystalline buildings. Some vital teams of crystals are:
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Laser crystals are optical crystals �?ordinarily single crystals (monocrystalline optical resources) �?which are employed as get media for solid-state lasers. Typically, they are doped with either trivalent unusual earth ions or changeover metallic 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。