5 Easy Facts About Laser Crystal Described
5 Easy Facts About Laser Crystal Described
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Distinct crystalline supplies are incredibly different relating to their hardness together with other Homes, which determine with which procedures and how quickly they can be Minimize and polished with top quality.
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。
The host medium influences strongly the wavelength, bandwidth and transition 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。
For quasi-a few-level laser achieve media or even three-stage gain media, one particular normally ought to Restrict the length to a price which happens to be as well limited for economical pump absorption, as reabsorption effects would in any other case spoil the effectiveness. For facet pumping, supplemental concerns arrive into Engage in; Aside from successful pump absorption, it can be crucial to acquire an acceptable spatial form on the achieve profile.
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A substantial harm threshold concerning pulse fluence or peak intensity is usually critical for top-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 concentration on the gain medium are most advantageous rely upon several aspects. The out there pump source (sort of laser diode or lamp) as well as envisaged pumping arrangement are important aspects, but the fabric itself also has some influence. By way of example, titanium–sapphire lasers ought to be pumped with large intensities, for which the shape of the transversely cooled rod, operated with relatively little pump and laser beam diameter, is a lot more ideal than e.
It might be oriented for around perpendicular incidence in the laser beam, or at Brewster's angle. It can be preset in a few solid mount which also functions like a warmth sink. More substantial crystals are read more frequently used for facet pumping e.g. with large-electricity diode bars.
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Individuals surfaces which might be passed by the laser beam are Generally possibly oriented at Brewster's angle or have an anti-reflection coating.
For many explanations, composite crystals are becoming well-liked. These Have a very spatially different chemical composition and may be manufactured with Particular shapes.
There's a variety of crystalline media, that may be grouped in accordance to special atomic constituents and crystalline constructions. Some critical groups of crystals are:
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It is apparent that various apps lead to incredibly distinct specifications on laser get media. For that reason, a wide selection of different crystals are made use of, and producing the proper preference is essential for setting up lasers with ideal performance.
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。