5 Simple Techniques For Laser Crystal
5 Simple Techniques For Laser Crystal
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The most typical laser-Energetic scarce earth ions and host media together with some usual emission wavelengths are shown in the following table:
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。
Laser crystals are optical crystals �?ordinarily one crystals (monocrystalline optical supplies) �?which can be utilized as gain media for solid-point out lasers. Most often, They may be doped with possibly trivalent rare earth ions or transition steel ions.
Moreover, some adaptability is lost in experiments if a single cannot try out absorbers with distinct thickness or doping concentration, one example is, without exchanging the laser crystal itself.
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：
晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。
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。
A number of laser crystal elements happen to be demonstrated wherever some saturable absorber product is included for passive Q switching of the laser.
激光晶体的核心由固态晶体材料组成，通常掺杂了某些能够通过受激发射产生光放大的离子。这些离子的性质对激光晶体的性能起决定作用。
For quasi-3-level laser attain media and even a few-degree gain media, just one frequently should limit the duration to a worth and that is as well short for economical pump absorption, as reabsorption results would if not spoil the overall performance. For side pumping, further things to consider occur into play; Aside from efficient pump absorption, it is vital to get an appropriate spatial form in the achieve profile.
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。
The medium should have a superior transparency (very low absorption and scattering) inside the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To click here some extent, this depends on the quality of the fabric, based on information of the fabrication course of action.
With that concept, one does not need an additional saturable absorber crystal, so that one may perhaps make extra compact Q-switched laser setups with reduce interior parasitic losses. Having said that, undesired Uncomfortable side effects may additionally happen, such as getting undesired valence states from the associated ions or Vitality transfers.
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