Nonlinear Crystal - An Overview
Nonlinear Crystal - An Overview
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Laser modeling and simulation can be used to reliably determine the optimum crystal Proportions, doping density And perhaps values of further parameters.
The medium must have a large transparency (very low absorption and scattering) inside the wavelength areas of pump and laser radiation, and great optical homogeneity. To some extent, this will depend on the standard of the fabric, based on details with the fabrication approach.
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and likewise the higher-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。
For quasi-three-stage laser attain media or even three-amount acquire media, a single frequently has to limit the duration to a price which is much too small for successful pump absorption, as reabsorption effects would normally spoil the functionality. For aspect pumping, more concerns arrive into Enjoy; besides effective pump absorption, it is crucial to acquire an appropriate spatial shape of the acquire profile.
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Also, some flexibility is lost in experiments if one simply cannot try out absorbers with various thickness or doping concentration, for instance, 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：
晶体生长 晶体加工 镀膜能�?品质管理 研发能力 新闻中心
These tables have only the commonest host crystals; many Other folks exist, which are considerably less regularly employed.
The most typical laser-active exceptional earth ions and host media along with some typical emission wavelengths are demonstrated in the subsequent desk:
Some laser crystal components happen to be shown in which some saturable absorber materials is integrated for passive Q switching of the laser.
For different reasons, composite crystals have become well-known. These Have got a spatially different chemical composition and might be created with Distinctive designs.
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 idea, 1 will not need to have a further saturable absorber crystal, to make sure that one may make far more compact Q-switched laser setups with reduce inside parasitic losses. Nevertheless, unwanted Unintended effects may happen, which include obtaining undesirable valence states in the associated ions or Vitality transfers.
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Laser crystals are optical crystals �?usually solitary crystals (monocrystalline optical products) �?which can be applied as attain media for strong-condition lasers. Usually, They are really doped with possibly trivalent scarce 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。