Rumored Buzz on Laser Crystal
Rumored Buzz on Laser Crystal
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Laser modeling and simulation may be used to reliably figure out the optimum crystal Proportions, doping density And perhaps values of further parameters.
The medium must have a superior transparency (minimal absorption and scattering) during the wavelength regions of pump and laser radiation, and very good optical homogeneity. To some extent, this depends on the quality of the material, determined by facts of your fabrication system.
The host medium influences strongly the wavelength, bandwidth and changeover cross-sections of pump and laser transitions and likewise the upper-state life span.
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For quasi-three-degree laser gain media or even three-stage gain media, one particular often has to Restrict the size to a price which happens to be also limited for economical pump absorption, as reabsorption effects would in any other case spoil the general performance. For facet pumping, additional factors arrive into Perform; Aside from productive pump absorption, it is crucial to get an appropriate spatial shape of the gain profile.
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A superior damage threshold when it comes to pulse fluence or peak depth can be vital for top-Electricity 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 from the attain medium are most beneficial rely on quite a few components. The accessible pump resource (kind of laser diode or lamp) as well as envisaged pumping arrangement are essential factors, but the material by itself also has some impact. By way of example, titanium–sapphire lasers have to be pumped with large intensities, for which the shape of the transversely cooled rod, operated with somewhat tiny pump and laser beam diameter, is more ideal than e.
It could be oriented for close to perpendicular incidence on the laser beam, or at Brewster's angle. It could be preset in certain solid mount which also acts as being a heat sink. Greater crystals are frequently employed for aspect pumping e.g. with substantial-electricity diode bars.
The most common laser-Lively exceptional earth ions and host media together with some typical emission wavelengths are demonstrated in the following desk:
Several laser crystal resources are shown the place some saturable absorber substance is integrated for passive Q switching of a laser.
For numerous causes, composite crystals have become well-liked. These have a spatially different chemical composition and may be produced with Distinctive designs.
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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It is apparent that diverse purposes cause very unique prerequisites on laser acquire media. Due to this, a broad variety of various crystals are applied, and producing the best preference is important 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。