Laser Crystal No Further a Mystery
Laser Crystal No Further a Mystery
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The commonest laser-active exceptional earth ions and host media along with some standard emission wavelengths are demonstrated in the subsequent desk:
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 one crystals (monocrystalline optical elements) �?which are utilised as attain media for good-point out lasers. Typically, They may be doped with both trivalent unusual earth ions or changeover metal ions.
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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。
A large surface high-quality is not surprisingly crucial. Specifications of floor flatness tend to be much better than . This assists to prevent both of those scattering losses and wavefront distortions which could degrade the laser's beam quality. Moreover, scratch and dig specifications
g. a thin disk. As A different case in point, Q-switched lasers arrive at a higher population density within the upper laser amount and are therefore extra sensitive to quenching effects and Power transfer processes; as a result, a decrease doping density is frequently suitable for these products. For top-electric power lasers, lessen doping densities are often utilized to Restrict the density of warmth era, Despite the fact that slim-disk lasers operate ideal with hugely doped crystals. A lot of laser items usually do not reach the full performance potential for the reason that these types of facts have not been correctly labored 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。
热膨胀和收缩系数对确定激光晶体的热透镜特性至关重要。最小化热透镜效应对于在广泛的操作温度范围内保持光束质量至关重要。
It is clear that unique apps cause quite diverse needs on laser obtain media. Because of this, a broad variety of different crystals are employed, and generating the appropriate alternative is important for constructing lasers with the best possible effectiveness.
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The medium must have a substantial transparency (small absorption and scattering) inside the wavelength areas of pump and laser radiation, and excellent optical homogeneity. To some extent, this is dependent upon the standard of the fabric, based on facts with the fabrication system.
It may be oriented for around perpendicular incidence on the laser beam, or at Brewster's angle. It could be preset in certain solid mount which also acts as a heat sink. Bigger crystals are generally utilized for aspect pumping e.g. with substantial-power diode bars.
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