Everything about Nonlinear Crystal
Everything about Nonlinear Crystal
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Different crystalline supplies are very different concerning their hardness and other Houses, which establish with which approaches And just how simply they may be cut and polished with high quality.
The medium ought to have a substantial transparency (very low absorption and scattering) while in the wavelength locations of pump and laser radiation, and fantastic optical homogeneity. To some extent, this is dependent upon the caliber of the material, determined by details of the fabrication approach.
The host crystal is much more than simply a means to fix the laser-Lively ions at specified positions in Area. Several Qualities with the host materials are very important:
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。
The utmost attainable doping focus can depend strongly to the host product and its fabrication strategy.
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A significant injury threshold in terms of pulse fluence or peak depth can be critical for top-Power 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 of your gain medium are most advantageous depend on several factors. The accessible pump resource (variety of laser diode or lamp) as well as envisaged pumping arrangement are very important aspects, but the fabric alone also has some influence. As an example, titanium–sapphire lasers need to be pumped with higher intensities, here for which the shape of the transversely cooled rod, operated with reasonably little pump and laser beam diameter, is a lot more suitable than e.
These tables incorporate only the most typical host crystals; a lot of Many others exist, that are less commonly utilised.
The most common laser-Lively unusual earth ions and host media together with some typical emission wavelengths are proven in the next table:
A couple of laser crystal products happen to be demonstrated in which some saturable absorber materials is integrated for passive Q switching of the laser.
Naturally, it is extremely desirable that a offered crystal top quality is made consistently, Though distinctive laser layouts may have a unique sensitivity to materials parameters.
You can find a variety of crystalline media, that may be grouped in accordance to special atomic constituents and crystalline buildings. Some crucial teams of crystals are:
蓝宝�?柱面�?球罩 偏振�?棱镜 红外光学元件 反射�?光学窗口 非球面镜 波片 分光�?制造能力
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Laser crystals are optical crystals �?generally single crystals (monocrystalline optical elements) �?that are applied as get media for good-condition lasers. Generally, They are really doped with possibly trivalent exceptional 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。