Detailed Notes on Laser Crystal
Detailed Notes on Laser Crystal
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Laser modeling and simulation can be used to reliably ascertain the optimum crystal Proportions, doping density and possibly values of supplemental 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 far more than just a way to repair the laser-Lively ions at sure positions in Area. Several Houses of your host material are important:
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The maximum doable doping concentration can rely strongly around the host substance and its fabrication technique.
g. a skinny disk. As another instance, Q-switched lasers access a greater populace density during the upper laser degree and they are consequently far more delicate to quenching effects and Power transfer processes; for that reason, a lessen doping density is usually appropriate for these equipment. For high-electrical power lasers, decreased doping densities are often used to limit the density of warmth technology, although skinny-disk lasers do the job best with very doped crystals. A lot of laser products and solutions do not reach the complete effectiveness prospective due to the fact these facts haven't been adequately labored out.
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On top of that, some adaptability is dropped in experiments if one particular are unable to try out absorbers with various thickness or doping focus, as an example, with out exchanging the laser crystal alone.
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 from the achieve medium are most useful depend on a number of variables. The readily available pump source (sort of laser diode or lamp) as well as envisaged pumping arrangement are important aspects, but the fabric alone also has some impact. For instance, titanium–sapphire lasers must be pumped with significant intensities, for which the shape of the transversely cooled rod, operated with reasonably compact pump and laser beam diameter, is more suitable than e.
These tables consist of only the commonest host crystals; a lot of Other folks exist, which might be considerably less usually employed.
The most common laser-active scarce earth ions and host media along with some standard emission wavelengths are revealed in the next table:
Those people surfaces that are handed by the laser beam are Usually either oriented at Brewster's angle or have an anti-reflection coating.
For a variety of explanations, composite crystals have become well known. These have a spatially various chemical composition and might be made with Particular designs.
There is click here an array of crystalline media, which can be grouped according to important atomic constituents and crystalline structures. Some important teams of crystals are:
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It is apparent that distinct programs result in pretty various prerequisites on laser achieve media. For that reason, a broad range of various crystals are utilised, and building the correct choice is essential for setting up lasers with ideal 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。