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。
In addition, some flexibility is shed in experiments if just one can not Check out absorbers with different thickness or doping focus, for instance, without the need of exchanging the laser crystal itself.
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the higher-condition lifetime.
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。
A large area top quality is certainly significant. Specs of area flatness are sometimes a lot better than . This allows in order to avoid both scattering losses and wavefront distortions which often can degrade the laser's beam top quality. On top of that, scratch and dig specs
The most feasible doping concentration can rely strongly on the host content and its fabrication technique.
Laser modeling and simulation can be employed to reliably establish the optimum crystal Proportions, doping density And perhaps values of additional parameters.
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。
For quasi-3-stage laser acquire media and even 3-stage attain media, one frequently has to limit the size to a price that's much too shorter for efficient pump absorption, as reabsorption effects would otherwise spoil the overall performance. For side pumping, extra factors arrive into Perform; Apart from efficient pump absorption, it is important to acquire an acceptable spatial condition on the achieve profile.
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The medium must have a superior transparency (low absorption and scattering) within the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this website is dependent upon the caliber of the fabric, determined by information on the fabrication course of action.
It may be oriented for around perpendicular incidence on the laser beam, or at Brewster's angle. It might be preset in certain solid mount which also acts as a heat sink. Bigger crystals are generally utilized for side pumping e.g. with large-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。