Laser Crystal - An Overview
Laser Crystal - An Overview
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Laser modeling and simulation can be employed to reliably identify the ideal crystal Proportions, doping density and possibly values of additional parameters.
The medium ought to have a significant transparency (small absorption and scattering) during the wavelength areas of pump and laser radiation, and excellent optical homogeneity. To some extent, this depends on the standard of the fabric, based on facts of the fabrication procedure.
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the upper-condition life span.
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 feasible doping focus can rely strongly to the host product and its fabrication system.
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A substantial destruction threshold concerning pulse fluence or peak intensity can be critical for top-Vitality amplifiers.
These ions allow the crystal to amplify light-weight with the laser wavelength by way of stimulated emission, when energy is provided on here the crystal by means of absorption of pump gentle (�?optical pumping
Which geometry, dopant and doping focus on the attain medium are most advantageous count on a number of elements. The readily available pump source (form of laser diode or lamp) along with the envisaged pumping arrangement are very important things, but the fabric alone also has some affect. One example is, titanium–sapphire lasers ought to be pumped with large intensities, for which the form of a transversely cooled rod, operated with rather little pump and laser beam diameter, is more acceptable than e.
These tables consist of only the most common host crystals; several Some others exist, which might be significantly less commonly utilized.
The most common laser-active unusual earth ions and host media along with some common emission wavelengths are demonstrated in the following table:
Those surfaces which are handed from the laser beam are Usually either oriented at Brewster's angle or have an anti-reflection coating.
For different motives, composite crystals are becoming well-known. These Have got a spatially various chemical composition and will be produced with Specific designs.
You can find a variety of crystalline media, which may be grouped in accordance to important atomic constituents and crystalline structures. Some critical 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 �?usually one crystals (monocrystalline optical resources) �?which happen to be utilized as get media for solid-point out lasers. Normally, They are really doped with either 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。