Considerations To Know About Laser Crystal
Considerations To Know About Laser Crystal
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These tables incorporate only the commonest host crystals; several Some others exist, which are much less routinely used.
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 with the gain medium are most useful rely on quite a few aspects. The accessible pump source (variety of laser diode or lamp) as well as envisaged pumping arrangement are important aspects, but the material by itself also has some affect. By way of example, titanium–sapphire lasers have to be pumped with substantial intensities, for which the shape of the transversely cooled rod, operated with reasonably small pump and laser beam diameter, is more acceptable than e.
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。
激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。
The most achievable doping concentration can count strongly around the host content and its fabrication system.
The host crystal is far more than just a means to fix the laser-active ions at specific positions in space. A variety of Homes of the host product are important:
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 achieve media and even three-level acquire media, 1 frequently should Restrict the length to a value which can be much too limited for successful pump absorption, as reabsorption outcomes would otherwise spoil the functionality. For aspect pumping, further issues appear into Participate in; besides effective pump absorption, it is necessary to get an acceptable spatial form in the get profile.
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It may be oriented for around perpendicular incidence from the laser beam, or at Brewster's angle. It may be fixed in certain good mount which also functions being a heat sink. Larger crystals are usually useful for facet pumping e.g. with superior-ability diode bars.
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