The Basic Principles Of Nonlinear Crystal
The Basic Principles Of Nonlinear Crystal
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Laser modeling and simulation can be used to reliably decide the the best possible crystal dimensions, doping density and possibly values of supplemental 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 changeover cross-sections of pump and laser transitions and likewise the upper-state life time.
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。
For quasi-three-stage laser gain media as well as a few-amount gain media, a person frequently ought to Restrict the length to a value that's much too short for productive pump absorption, as reabsorption outcomes would if not spoil the overall performance. For side pumping, added things to consider appear into Participate in; besides productive pump absorption, it can be crucial to acquire an acceptable spatial form from the acquire profile.
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In addition, some versatility is missing in experiments if just one cannot try out absorbers with various thickness or doping focus, such as, without exchanging the laser crystal 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：
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It could be oriented for in the vicinity of perpendicular incidence of the laser beam, or at Brewster's angle. It can be mounted in a few good mount which also acts to be a heat sink. Greater crystals tend to be employed for side pumping e.g. with higher-electrical power diode bars.
The commonest laser-Lively rare earth ions and host media along with some normal emission wavelengths are shown in the following desk:
Individuals surfaces which happen to be passed with the laser beam are Ordinarily either oriented at Brewster's angle click here or have an anti-reflection coating.
For numerous good reasons, composite crystals are getting to be preferred. These Have got a spatially varying chemical composition and can be designed with Exclusive 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。
With that concept, one particular isn't going to will need an extra saturable absorber crystal, to ensure that one may perhaps make extra compact Q-switched laser setups with lower inside parasitic losses. Having said that, unwanted Uncomfortable side effects could also arise, which include obtaining unwanted valence states of the associated ions or Vitality transfers.
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Laser crystals are optical crystals �?typically single crystals (monocrystalline optical components) �?that happen to be utilised as get media for solid-point out lasers. Typically, These are doped with both trivalent unusual earth ions or transition metal 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。