Laser Crystal No Further a Mystery
Laser Crystal No Further a Mystery
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These tables include only the commonest host crystals; several Many others exist, which might be considerably less often utilised.
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 �?normally one crystals (monocrystalline optical elements) �?which can be made use of as acquire media for solid-condition lasers. In most cases, They are really doped with possibly trivalent uncommon earth ions or changeover metallic ions.
Moreover, some overall flexibility is lost in experiments if 1 can not Check out absorbers with various thickness or doping focus, for instance, devoid of exchanging the laser crystal alone.
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and also the higher-state life time.
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A superior area top quality is needless to say important. Specs of area flatness are sometimes better than . This will help to prevent both scattering losses and wavefront distortions which often can degrade the laser's beam top quality. Furthermore, scratch and dig technical specs
g. a thin disk. As another case in point, Q-switched lasers access an increased populace density inside the upper laser level and they are hence far more sensitive to quenching outcomes and Power transfer procedures; for that reason, a reduce doping density is frequently appropriate for these equipment. For high-ability lasers, decreased doping densities are frequently utilized to Restrict the density of heat generation, While thin-disk lasers operate very best with hugely doped crystals. Many laser solutions do not reach the whole effectiveness potential simply because these types of aspects haven't been correctly worked out.
The host crystal is way more than just a means to fix the laser-active ions at particular positions in House. Quite a few properties on the host product are very important:
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。
These surfaces that more info are passed via the laser beam are Generally possibly oriented at Brewster's angle or have an anti-reflection coating.
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It may be oriented for in close proximity to perpendicular incidence on the laser beam, or at Brewster's angle. It can be fixed in some good mount which also acts for a heat sink. Larger crystals are often employed for side pumping e.g. with significant-electrical power diode bars.
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。