Considerations To Know About Laser Crystal

Considerations To Know About Laser Crystal

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为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。

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。

Which geometry, dopant and doping concentration with the acquire medium are most advantageous rely upon a number of variables. The available pump source (form of laser diode or lamp) and the envisaged pumping arrangement are essential variables, but the material alone also has some impact. One example is, titanium–sapphire lasers ought to be pumped with higher intensities, for which the form of a transversely cooled rod, operated with relatively tiny pump and laser beam diameter, is much more acceptable than e.

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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 achieve the next populace density from the upper laser degree and are consequently more delicate to quenching outcomes and Strength transfer processes; consequently, a reduce doping density is commonly appropriate for these devices. For prime-energy lasers, lower doping densities are often accustomed to Restrict the density of heat era, Even though slim-disk lasers function finest with extremely doped crystals. Quite a few laser items will not get to the complete performance opportunity since these types of aspects have not been appropriately 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。

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。

It is obvious that different apps bring about really unique requirements on laser attain media. For that reason, a broad selection of different crystals are applied, and creating the appropriate selection is important for constructing lasers with ideal general performance.

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。

For a variety of factors, composite crystals have gotten popular. These Possess a spatially different chemical composition and will be created with Distinctive shapes.

It could be oriented for near perpendicular incidence of the laser beam, or at Brewster's angle. It could be preset in a few good mount which also functions being a heat sink. Bigger crystals tend to click here be employed for side pumping e.g. with superior-ability 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。