Laser Crystal - An Overview
Laser Crystal - An Overview
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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 �?generally one crystals (monocrystalline optical products) �?that happen to be used as get media for solid-state lasers. Generally, They're doped with both trivalent rare earth ions or changeover steel 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。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the upper-point out lifetime.
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Of course, it is vitally desirable that a specified crystal good quality is developed regularly, Though diverse laser types may have a distinct sensitivity to materials parameters.
g. a thin disk. As A further case in point, Q-switched lasers attain an increased populace density in the higher laser degree and so are thus far more sensitive to quenching consequences and Electrical power transfer processes; as a result, a lessen doping density is often appropriate for these devices. For prime-electric power lasers, lower doping densities are frequently accustomed to limit the density of heat technology, Whilst slim-disk lasers perform best with very doped crystals. Many laser solutions never get to the complete overall performance possible mainly because this sort of particulars have not been correctly worked out.
The host crystal is way more than simply a way to fix the laser-Lively ions at selected positions in Area. Numerous properties in the host substance are very important:
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The medium ought to have a high transparency (small absorption and scattering) during the wavelength locations of pump and laser radiation, and fantastic optical homogeneity. To some extent, this will depend on the standard of the fabric, determined by facts from the fabrication procedure.
It might be oriented for close to perpendicular incidence with the laser beam, or at Brewster's angle. It may be set in certain stable mount which also here functions like a warmth sink. Larger sized crystals are generally employed for side pumping e.g. with significant-electricity diode bars.
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