The Basic Principles Of Laser Crystal
The Basic Principles Of Laser Crystal
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The most common laser-Lively exceptional earth ions and host media along with some normal emission wavelengths are proven in the subsequent desk:
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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 in addition to the higher-state 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。
激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
The host crystal is considerably more than simply a means to repair the laser-active ions at selected positions in Area. Quite a few Qualities of your host content are important:
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 distinctive apps bring on pretty distinctive needs on laser achieve media. For this reason, a broad variety of different crystals are used, and making the proper preference is important for constructing lasers with the best possible functionality.
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For numerous factors, composite crystals are becoming popular. These Use a spatially varying chemical composition and may be designed with Particular styles.
It could be oriented for around perpendicular incidence of your laser beam, or at Brewster's angle. It may be fastened in certain sound mount which also functions to be a heat sink. Much larger crystals are usually useful for side pumping e.g. with high-electrical power diode bars.
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