The Basic Principles Of Laser Crystal
The Basic Principles Of Laser Crystal
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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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Which geometry, dopant and doping concentration on the get medium are most beneficial rely upon many variables. The offered pump supply (style of laser diode or lamp) plus the envisaged pumping arrangement are crucial components, but the material itself also has some impact. By way of example, titanium–sapphire lasers need to be pumped with high intensities, for which the shape of a transversely cooled rod, operated with somewhat tiny pump and laser beam diameter, is 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。
亚稳态寿命也起着重要作用。较长的寿命允许更多的储能和实现粒子数反转的更高潜力，这对激光动作至关重要。
Laser modeling and simulation can be utilized to reliably determine the ideal crystal dimensions, doping density And perhaps values of more parameters.
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-3-degree laser attain media or maybe three-stage acquire media, one often ought to limit the size to a worth which can be much too quick for economical pump absorption, as reabsorption results would usually spoil the efficiency. For aspect pumping, additional criteria come into Engage in; Apart from get more info effective pump absorption, it is important to obtain an appropriate spatial condition from the gain profile.
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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。