Little Known Facts About Laser Crystal.
Little Known Facts About Laser Crystal.
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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。
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作为工业上使用较多的都是高掺钇铝石榴石，也就是说掺入不同的元素来达到不同的效果；作为工业激光，关注以下性能：
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 thin disk. As A further illustration, Q-switched lasers attain the next population density from the upper laser degree and so are as a result much more sensitive to quenching consequences and energy transfer processes; therefore, a reduce doping density is frequently suitable for these devices. For high-electric power lasers, lower doping densities are sometimes utilized to Restrict the density of warmth technology, Whilst thin-disk lasers work finest with highly doped crystals. Many laser products don't reach the complete effectiveness probable because this kind of details have not been correctly labored out.
A handful of laser crystal elements are demonstrated wherever some saturable absorber material is incorporated for passive Q switching of a laser.
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。
All those surfaces which might be handed through the laser beam are Usually possibly oriented at Brewster's angle or have an anti-reflection coating.
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The medium should have click here a high transparency (small absorption and scattering) during the wavelength regions of pump and laser radiation, and fantastic optical homogeneity. To some extent, this is dependent upon the quality of the material, determined by aspects on the fabrication method.
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