What Does Laser Crystal Mean?
Distinct crystalline materials are incredibly diverse relating to their hardness as well as other Homes, which figure out with which procedures And the way easily they may be Slice 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 crystal is much more than just a method to repair the laser-Energetic ions at specific positions in Place. A number of properties of your host substance are important:
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For quasi-3-level laser attain media or perhaps a few-amount obtain media, 1 usually should limit the size to a worth which can be also quick for productive pump absorption, as reabsorption outcomes would or else spoil the performance. For facet pumping, more issues arrive into Engage in; In addition to successful pump absorption, it can be crucial to acquire an appropriate spatial condition in the achieve profile.
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Also, some adaptability is lost in experiments if a single are not able to try out absorbers with unique thickness or doping focus, such as, with out 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：
Which geometry, dopant and doping focus with the attain medium are most beneficial rely on numerous factors. The available pump resource (style of laser diode or lamp) along with the envisaged pumping arrangement are important components, but the material alone also has some affect. For instance, titanium–sapphire lasers ought to be pumped with substantial intensities, for which the form of the transversely cooled rod, operated with fairly smaller pump and laser beam diameter, is much more appropriate than e.
These tables incorporate only the most common host crystals; lots of Many others exist, that are significantly less regularly made use of.
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People surfaces that are passed through the laser beam are Ordinarily either oriented at Brewster's angle or have an anti-reflection coating.
Certainly, it is extremely appealing that a offered crystal top quality is made regularly, Even though various laser designs may have a special sensitivity to material parameters.
You can find a wide array of crystalline media, which can be grouped in accordance to important atomic constituents and crystalline constructions. Some important teams of crystals are:
With That idea, 1 would not need to have an additional saturable absorber crystal, to ensure one may possibly make more compact Q-switched laser setups with decrease inside parasitic losses. However, undesirable side effects might also arise, for instance getting unwelcome valence states from the concerned ions or Strength transfers.
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It is apparent that different purposes produce very different requirements on laser attain media. This is why, a wide vary of various crystals are made use of, and earning the appropriate preference is important for developing lasers with optimum functionality.
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。