5 Simple Techniques For Laser Crystal
5 Simple Techniques For Laser Crystal
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The most typical laser-active unusual earth ions and host media together with some normal emission wavelengths are revealed in the next desk:
激光晶体的极化性能可能会影响输出激光束的质量和特性。有些激光晶体产生线性偏振光，这对某些应用可能有益。
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激光晶体中活性离子的作用是什么？ 活性离子在激光晶体中负责通过受激发射产生激光光线。
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and in addition the upper-point out life time.
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。
Not surprisingly, it is very desirable that a provided crystal excellent is generated continuously, Whilst different laser designs might have a unique sensitivity to substance parameters.
g. a thin disk. As An additional case in point, Q-switched lasers get to a greater inhabitants density while in the higher laser degree and so are consequently a lot more delicate to quenching outcomes and energy transfer processes; thus, a reduce doping density is usually suitable for these equipment. For prime-ability lasers, reduce doping densities in many cases are utilized to Restrict the density of heat generation, Even though skinny-disk lasers operate best with hugely doped crystals. Lots of laser products don't reach the complete efficiency likely simply because this sort of particulars haven't been thoroughly 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。
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。
For quasi-a few-stage laser achieve media as well as 3-level attain media, a person normally ought to limit the length to a worth which can be as get more info well small for successful pump absorption, as reabsorption effects would if not spoil the effectiveness. For side pumping, more factors appear into play; Moreover effective pump absorption, it can be crucial to obtain an appropriate spatial form of your get profile.
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The medium should have a superior transparency (low absorption and scattering) within the wavelength locations of pump and laser radiation, and good optical homogeneity. To some extent, this is determined by the standard of the material, based on information with the fabrication course of action.
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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。