The Nonlinear Crystal Diaries
The Nonlinear Crystal Diaries
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Laser modeling and simulation may be used to reliably determine the optimum crystal Proportions, doping density and possibly values of extra parameters.
The medium must have a substantial transparency (lower absorption and scattering) inside the wavelength regions of pump and laser radiation, and good optical homogeneity. To some extent, this relies on the quality of the material, based on facts of the fabrication system.
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions as well as the higher-condition 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。
The utmost doable doping concentration can depend strongly around the host materials and its fabrication strategy.
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A high problems threshold regarding pulse fluence or peak intensity may be significant for high-Electricity amplifiers.
These ions permit the crystal to amplify light on the laser wavelength by using stimulated emission, when Strength is supplied for the crystal by means of absorption of pump light (�?optical pumping
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It could be oriented for close to perpendicular incidence from the laser beam, or at Brewster's angle. It may be fixed in a few strong mount which also functions to be a warmth sink. Greater crystals usually are useful for facet pumping e.g. with high-energy diode bars.
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These surfaces which happen to be handed with the laser beam are Usually either oriented at Brewster's angle or have an anti-reflection coating.
For different causes, composite crystals are becoming preferred. These Use a spatially various chemical composition and may be manufactured with Particular 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, a single will not require an extra saturable absorber crystal, to ensure 1 may well make far more compact Q-switched laser Nonlinear Crystal setups with decrease inside parasitic losses. Having said that, undesirable Unintended effects may also occur, like acquiring unwelcome valence states on the concerned ions or Power transfers.
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Laser crystals are optical crystals �?commonly one crystals (monocrystalline optical products) �?which can be utilised as get media for reliable-state lasers. Generally, They can be doped with possibly trivalent uncommon earth ions or transition 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。