Various crystalline supplies are incredibly diverse concerning their hardness as well as other Homes, which determine with which approaches And exactly how very easily they can be Slice and polished with good quality.
The medium ought to have a higher transparency (low absorption and scattering) from the wavelength regions of pump and laser radiation, and excellent optical homogeneity. To some extent, this relies on the caliber of the fabric, determined by details on the fabrication course of action.
The host crystal is far more than just a method to fix the laser-active ions at particular positions in Place. A number of Qualities of your host product are crucial:
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。
For quasi-a few-degree laser gain media as well as three-stage obtain media, just one generally needs to limit the duration to a worth that's way too quick for effective pump absorption, as reabsorption results would or else spoil the efficiency. For facet pumping, more things to consider come into play; In addition to successful pump absorption, it is important to acquire a suitable spatial condition of your acquire profile.
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A superior destruction threshold concerning pulse fluence or peak depth might be significant for prime-Vitality amplifiers.
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:
Which geometry, dopant and doping focus in the achieve medium are most useful count on many factors. The readily available pump source (sort of laser diode or lamp) as well as the envisaged pumping arrangement are essential components, but the fabric alone also has some impact. For instance, titanium–sapphire lasers must be pumped with significant intensities, for which the shape of the transversely cooled rod, operated with somewhat modest pump and laser beam diameter, is much more proper than e.
It might be oriented for close to perpendicular incidence from the laser beam, or at Brewster's angle. It might be fastened in a few stable mount which also functions to be a warmth sink. Larger sized crystals are often used for aspect pumping e.g. with significant-ability diode bars.
The commonest laser-active scarce earth ions and host media together with some common emission wavelengths are revealed in the next table:
A number of laser crystal elements have been shown where by some saturable absorber product is included for passive Q switching of the laser.
For several good reasons, composite crystals have gotten well-known. These Possess a spatially varying chemical composition and will be manufactured with Particular shapes.
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。
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GWU presents all widespread laser crystals (Nd:YVO4, Nd:YAG, Yb:YAG and so forth.) using a wide a number of requirements. Apart from the nicely-established elements, progressive crystals with outstanding Houses like Yb:CALGO can open new horizons for demanding laser programs. No matter no matter if person items for R & D functions are required or Value-economical numbers in modest, medium or substantial batches with in-time delivery for the generation line are needed: GWU’s focused provider helps you to discover the ideal core factors in your software.
Laser crystals are optical crystals �?typically single crystals (monocrystalline optical products) �?which are utilised as achieve media for strong-state lasers. Generally, they are doped with both trivalent rare earth ions or transition metallic ions.
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。
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