A Simple Key For Laser Crystal Unveiled
A Simple Key For Laser Crystal Unveiled
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Various crystalline elements are quite different relating to their hardness as well as other Houses, which figure out with which approaches And exactly how very easily they are often cut and polished with good quality.
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 also the upper-state life span.
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-a few-stage laser achieve media and even three-amount achieve media, one particular usually must Restrict the size to a value which happens to be far too quick for efficient pump absorption, as reabsorption consequences would in any other case spoil the overall performance. For facet pumping, further concerns appear into Perform; Other than successful pump absorption, it's important to acquire a suitable spatial form of the get profile.
g. a skinny disk. As A different example, Q-switched lasers get to a higher populace density during the upper laser stage and they are consequently additional delicate to quenching effects and Strength transfer procedures; therefore, a reduced doping density is frequently suitable for these devices. For prime-electricity lasers, lessen doping densities tend to be accustomed to Restrict the density of warmth technology, although thin-disk lasers perform ideal with remarkably doped crystals. Lots of laser goods usually do not reach the entire overall performance possible for the reason that this sort of aspects have not been adequately worked out.
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Furthermore, some flexibility is missing in experiments if one particular are unable to try out absorbers with different thickness or doping focus, for instance, without the need of 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
It could be oriented for near perpendicular incidence from the laser beam, or at Brewster's angle. It may be mounted in Nonlinear Crystal a few solid mount which also acts as being a warmth sink. Greater crystals are frequently employed for aspect pumping e.g. with substantial-electricity diode bars.
The most typical laser-active rare earth ions and host media along with some regular emission wavelengths are proven in the following desk:
These surfaces which happen to be passed by the laser beam are Typically either oriented at Brewster's angle or have an anti-reflection coating.
For various motives, composite crystals are becoming well-known. These Have got a spatially varying chemical composition and might be built with Particular 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, just one would not need an additional saturable absorber crystal, to ensure that a single could make far more compact Q-switched laser setups with decrease inner parasitic losses. Even so, undesirable Uncomfortable side effects may arise, for example acquiring unwanted valence states on the included ions or Electrical power transfers.
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It is clear that various apps bring on extremely diverse prerequisites on laser acquire media. Because of this, a wide assortment of different crystals are applied, and producing the proper choice is important for setting up 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。