5 Easy Facts About Laser Crystal Described
5 Easy Facts About Laser Crystal Described
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激光晶体是固态激光器的核心。它们是光放大发生的媒介，产生激光束。在这篇全面指南中，我们深入探讨激光晶体的世界。
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 higher-condition life span.
激光晶体由发光中心和基质晶体两部分组成。大部分激光晶体的发光中心由激活离子构成，激活离子部分取代基质晶体中的阳离子形成掺杂型激光晶体。激活离子成为基质晶体组分的一部分时，则构成自激活激光晶体。
活性离子在激光晶体内发生的能量跃迁对激光操作至关重要。大多数激光操作都是通过四能级系统原理进行的，确保连续操作并防止浪费的非辐射衰变。
g. a skinny disk. As Yet another illustration, Q-switched lasers reach an increased inhabitants density from the higher laser amount and therefore are hence far more delicate to quenching outcomes and Power transfer procedures; consequently, a reduce doping density is commonly appropriate for these equipment. For prime-power lasers, lower doping densities are often utilized to limit the density of warmth technology, Whilst skinny-disk lasers perform very best with extremely doped crystals. A lot of laser merchandise usually do not get to the comprehensive effectiveness likely because such information haven't been thoroughly labored out.
Several laser crystal products have already been shown the place some saturable absorber product is incorporated for passive Q switching of a laser.
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Individuals surfaces which can be handed because of the laser beam are Typically possibly 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。
In 2017, we developed the earth’s biggest Ti∶sapphire crystal (Φ235 mm), which supported the 10 PW laser output of Shanghai Superintense Ultrafast Laser Facility. The event of Yb and Tm doped GdScO3 laser crystals with extremely extensive emission spectra drives the event of laser diode pumped ultrafast solid-state lasers. With the increase in pulse Strength, peak ability, and repetition rate of sound-point out lasers, laser crystals will develop in the direction of greater measurements, increased crystal excellent, and controllable vital performance.
It may be oriented for near perpendicular incidence from the laser beam, or at Brewster's angle. It may be set in some strong mount which also read more acts as being a warmth sink. Larger crystals are usually utilized for side pumping e.g. with superior-electrical power diode bars.
人造红宝石激光晶体是首次实现激光输出的材料。可用焰熔法、提拉法或助熔剂法生产单晶。用提拉法容易获得大尺寸优质晶体。