Indicators on Laser Crystal You Should Know
Indicators on Laser Crystal You Should Know
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Various crystalline elements are incredibly various relating to their hardness as well as other properties, which identify with which strategies And exactly how conveniently they may be Lower and polished with high quality.
The medium must have a superior transparency (very low absorption and scattering) while in the wavelength regions of pump and laser radiation, and good optical homogeneity. To some extent, this depends on the standard of the material, determined by details on the fabrication process.
The host crystal is way more than simply a method to repair the laser-Lively ions at particular positions in Room. A variety of Attributes from the host materials are essential:
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-stage laser achieve media or maybe three-degree get media, 1 usually really should limit the duration to a value and that is too short for efficient pump absorption, as reabsorption consequences would if not spoil the efficiency. For side pumping, further criteria appear into Participate in; Apart from successful pump absorption, it is important to obtain an appropriate spatial form from the obtain profile.
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A higher injury threshold regarding pulse fluence or peak intensity may be vital for prime-Strength 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 of the obtain medium are most advantageous rely on quite a few variables. The accessible pump resource (kind of laser diode or lamp) as well as envisaged pumping arrangement are important aspects, but the material itself also has some influence. For instance, titanium–sapphire lasers must be pumped with substantial intensities, for which the form of a transversely cooled rod, operated with relatively tiny pump and laser beam diameter, is much more proper than e.
These tables contain only the commonest host crystals; quite a few Some others exist, which happen to be fewer routinely used.
The most typical laser-Lively unusual earth ions and host media along with some common emission wavelengths are proven in the next desk:
People surfaces which happen to be passed with the laser beam are Typically possibly oriented at Brewster's angle or have an anti-reflection coating.
For various factors, composite crystals have gotten preferred. These Have got a spatially various chemical composition and may be manufactured with Specific styles.
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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Laser crystals are optical crystals �?ordinarily one crystals (monocrystalline optical elements) �?which happen to be applied as get media for reliable-state lasers. In most cases, they are doped with possibly trivalent exceptional earth ions or changeover steel 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。