A Secret Weapon For Nonlinear Crystal
A Secret Weapon For Nonlinear Crystal
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Different crystalline elements are quite different relating to their hardness along with other Attributes, which establish with which procedures and how very easily they may be cut and polished with high quality.
The medium ought to have a high transparency (minimal absorption and scattering) from the wavelength regions of pump and laser radiation, and great optical homogeneity. To some extent, this is dependent upon the standard of the material, based on facts from the fabrication process.
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions as well as the higher-state lifetime.
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。
The maximum doable doping concentration can count strongly on the host material and its fabrication technique.
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In addition, some adaptability is dropped in experiments if one particular are unable to Check out absorbers with distinct thickness or doping concentration, for instance, without the need of exchanging the laser crystal itself.
These ions permit the crystal to amplify gentle with the laser wavelength via stimulated emission, when Vitality is supplied to your crystal via absorption of pump gentle (�?optical pumping
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These tables have only the commonest host crystals; quite a few Other folks exist, which might be less frequently employed.
The commonest laser-Lively exceptional earth ions and host media together with some regular emission wavelengths are shown in the next desk:
Some laser crystal supplies are demonstrated the place some saturable absorber material is integrated for passive Q switching of the Laser Crystal laser.
For numerous good reasons, composite crystals are becoming common. These Have got a spatially varying chemical composition and might be built with Particular designs.
There may be a variety of crystalline media, which can be grouped according to important atomic constituents and crystalline structures. Some crucial groups of crystals are:
With That idea, one doesn't require an extra saturable absorber crystal, in order that one particular may possibly make far more compact Q-switched laser setups with decrease inside parasitic losses. Nonetheless, undesirable Negative effects may also happen, like acquiring undesirable valence states from the involved ions or energy transfers.
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Laser crystals are optical crystals �?usually solitary crystals (monocrystalline optical products) �?that are applied as gain media for sound-condition lasers. Most often, They may be doped with both trivalent scarce earth ions or transition metal 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。