5 Essential Elements For Laser Crystal
5 Essential Elements For Laser Crystal
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The most common laser-Lively rare earth ions and host media along with some typical emission wavelengths are revealed in the next table:
激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。
Laser crystals are optical crystals �?ordinarily solitary crystals (monocrystalline optical products) �?which can be made use of as obtain media for stable-state lasers. Normally, They are really doped with either trivalent scarce earth ions or transition metal ions.
Moreover, some overall flexibility is shed in experiments if 1 are not able to try out absorbers with unique thickness or doping concentration, as an example, with no exchanging the laser crystal by itself.
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and likewise the higher-condition life span.
晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。
Of course, it is very attractive that a supplied crystal high-quality is manufactured continually, Despite the fact that various laser models may have a different sensitivity to product parameters.
g. a skinny disk. As another instance, Q-switched lasers arrive at a greater populace density from the higher laser level and so are therefore far more delicate to quenching consequences and energy transfer processes; as a result, a decrease doping density is frequently suitable for these equipment. For top-power lasers, lower doping densities are frequently used to Restrict the density of warmth era, Even though thin-disk lasers function very best with highly doped crystals. Many laser products never get to the entire functionality prospective simply because such facts have not been thoroughly worked out.
激光晶体的效率在很大程度上依赖于某些属性，这些属性不仅限于其基本组成。这些特性决定了产生的激光光束的质量和随后的应用。
量子效率是发射光子数量与吸收光子数量的比率。高量子效率表明更大部分吸收能量被转化为激光光束，有助于提高激光的整体效率。
Those surfaces which might be passed via the laser beam are Typically either oriented at Brewster's angle or have an anti-reflection coating.
主体材料中活性离子掺杂物的数量是关键因素。它影响了激光的效率和性能。过低的浓度可能导致低输出，过高的浓度可能导致消光效应，降低晶体的效率。
The medium should have a superior transparency (lower absorption and scattering) within the wavelength locations of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends upon the standard of the material, determined by aspects on the fabrication course of action.
With That idea, a person would not have to have yet another saturable absorber crystal, to make sure that a person may perhaps make additional compact Q-switched laser setups with decrease inner parasitic losses. Nevertheless, unwelcome side effects may come about, for instance acquiring unwelcome valence states on the involved ions or Electrical power transfers.
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