Nonlinear Crystal - An Overview
Nonlinear Crystal - An Overview
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Laser modeling and simulation can be used to reliably identify the the best possible crystal dimensions, doping density and possibly values of added 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 crystal is much more than simply a means to fix the laser-active ions at certain positions in House. A number of Qualities of the host substance are crucial:
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The most feasible doping concentration can depend strongly on the host materials and its fabrication system.
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A substantial injury threshold concerning pulse fluence or peak intensity might be essential for high-Electrical power amplifiers.
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 on the obtain medium are most beneficial count on numerous variables. The out there pump resource (kind of laser diode or lamp) as well as the envisaged pumping arrangement are important aspects, but the fabric by itself also has some affect. Such as, titanium–sapphire lasers have to be pumped with superior intensities, for which the form of the transversely cooled rod, operated with fairly little pump and laser beam diameter, is more suitable than e.
It may be oriented for close to perpendicular incidence with the laser beam, or at Brewster's angle. It may be fastened in a few reliable mount which also functions as being a warmth sink. Larger sized crystals are frequently utilized for facet pumping e.g. with significant-electric power diode bars.
The most typical laser-active scarce earth ions and host media along with some normal emission wavelengths are demonstrated in the following desk:
Some laser crystal supplies are actually demonstrated wherever some saturable absorber material is integrated for passive Q switching of the laser.
For numerous good reasons, composite crystals are becoming well-known. These Have got a spatially varying chemical composition and may be designed with special shapes.
You can find a wide range of crystalline media, which can be grouped according to important atomic constituents and crystalline structures. Some essential groups of crystals are:
With That idea, a person does not need an additional saturable absorber crystal, to ensure that a single could make a lot more compact Q-switched laser setups with reduced inner parasitic losses. Nonetheless, undesirable Uncomfortable side effects may arise, for example obtaining unwanted valence states of the involved ions or Electrical power transfers.
GWU provides all common laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG etcetera.) that has a broad number of technical specs. Moreover the effectively-established products, modern crystals with excellent Attributes like Yb:CALGO can open up new horizons for demanding laser applications. It doesn't matter no matter if personal parts for R & D needs are required or cost-efficient quantities in small, medium or large batches with in-time supply for your output line are necessary: GWU’s focused support really helps to find the ideal Main elements in your application.
It is apparent that diverse purposes lead to really diverse prerequisites on laser acquire media. For that reason, a broad array of various crystals are read more used, and creating the correct decision is important for developing lasers with the best possible performance.
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。