Distinct crystalline materials are extremely different regarding their hardness along with other properties, which determine with which procedures And the way conveniently they are often Minimize 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 transition cross-sections of pump and laser transitions and also the upper-state lifetime.
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For quasi-a few-degree laser gain media or maybe 3-amount obtain media, one usually needs to limit the size to a price which happens to be also shorter for productive pump absorption, as reabsorption results would if not spoil the functionality. For facet pumping, more criteria come into Perform; Aside from successful pump absorption, it can be crucial to obtain a suitable spatial form on the achieve profile.
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On top of that, some overall flexibility is lost in experiments if 1 simply cannot try out absorbers with different thickness or doping concentration, one example is, with out exchanging the laser crystal by itself.
These ions enable the crystal to amplify light on the laser wavelength by means of stimulated emission, when Electricity is provided towards the crystal by way of absorption of pump mild (�?optical pumping
Which geometry, dopant and doping focus with the achieve medium are most beneficial depend upon various components. The obtainable pump supply (style of laser diode or lamp) as well as envisaged pumping arrangement are crucial elements, but the fabric alone also has some affect. As an example, titanium–sapphire lasers must be pumped with large intensities, for which the form of the transversely cooled rod, operated with fairly modest pump and laser beam diameter, is much more proper than e.
It might be oriented for around perpendicular incidence on the laser beam, or at Brewster's angle. It could check here be mounted in some solid mount which also acts like a warmth sink. Much larger crystals are frequently used for aspect pumping e.g. with significant-ability diode bars.
The most common laser-Lively uncommon earth ions and host media along with some usual emission wavelengths are demonstrated in the subsequent desk:
People surfaces which are handed through the laser beam are Usually either oriented at Brewster's angle or have an anti-reflection coating.
Not surprisingly, it is extremely fascinating that a specified crystal high-quality is manufactured constantly, Despite the fact that different laser designs may have a special sensitivity to content parameters.
There may be a wide range of crystalline media, that may be grouped according to big atomic constituents and crystalline buildings. Some crucial groups of crystals are:
With that concept, 1 doesn't require an extra saturable absorber crystal, to ensure that one may perhaps make additional compact Q-switched laser setups with decrease internal parasitic losses. Nonetheless, undesired Unintended effects may additionally happen, which include acquiring unwelcome valence states on the concerned ions or Electrical power transfers.
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Laser crystals are optical crystals �?usually single crystals (monocrystalline optical products) �?which might be utilized as acquire media for solid-point out lasers. Usually, they are doped with both trivalent rare earth ions or transition metallic 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。
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