5 Simple Techniques For Nonlinear Crystal
5 Simple Techniques For Nonlinear Crystal
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Laser modeling and simulation can be employed to reliably identify the ideal crystal Proportions, doping density And perhaps values of supplemental parameters.
The medium ought to have a large transparency (minimal absorption and scattering) inside the wavelength areas of pump and laser radiation, and very good optical homogeneity. To some extent, this depends on the standard of the fabric, determined by facts from the fabrication system.
The host crystal is a lot more than just a method to fix the laser-Lively ions at sure positions in Area. Many properties with the host substance 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-level laser acquire media or even three-amount gain media, one usually has to limit the size to a worth which can be far too limited for economical pump absorption, as reabsorption effects would usually spoil the functionality. For side pumping, supplemental criteria occur into play; Moreover productive pump absorption, it is vital to obtain an appropriate spatial condition on the obtain profile.
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A significant destruction threshold concerning pulse fluence or peak depth is often significant for prime-Strength amplifiers.
These ions empower the crystal to amplify gentle at the laser wavelength through stimulated emission, when Vitality is supplied into the crystal by using absorption of pump gentle (�?optical pumping
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These tables incorporate only the most typical host crystals; numerous Some others exist, which are much less commonly utilised.
The most common laser-Lively exceptional earth ions and host media together with some regular emission wavelengths are demonstrated in the following table:
Individuals surfaces which might be passed because of the laser beam are normally either oriented at Brewster's angle or have an anti-reflection coating.
For several good reasons, composite crystals are becoming well-known. These Have got a spatially various chemical composition and might be designed 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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Laser crystals are optical crystals �?typically solitary crystals (monocrystalline optical supplies) �?that are utilised as achieve media for reliable-condition lasers. Typically, They are really doped with possibly trivalent exceptional earth ions or changeover metal 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。