What Does Laser Crystal Mean?
What Does Laser Crystal Mean?
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Laser modeling and simulation may be used to reliably identify the ideal crystal dimensions, doping density And perhaps values of extra parameters.
The medium must have a superior transparency (reduced absorption and scattering) while in the wavelength locations of pump and laser radiation, and great optical homogeneity. To some extent, this is dependent upon the standard of the fabric, based on particulars on the fabrication course of action.
The host medium influences strongly the wavelength, bandwidth and transition cross-sections of pump and laser transitions and likewise the higher-point out life span.
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For quasi-three-amount laser get media or maybe 3-level attain media, just one typically has to limit the duration to a value which is much too small for effective pump absorption, as reabsorption effects would if not spoil the effectiveness. For side pumping, additional things to consider arrive into Participate in; Moreover effective pump absorption, it is important to get a suitable spatial form of the get profile.
g. a thin disk. As A different example, Q-switched lasers get to a higher population density from the upper laser degree and they are consequently additional delicate to quenching results and Electricity transfer procedures; consequently, a decrease doping density is commonly appropriate for these units. For top-power lasers, reduced doping densities in many cases are used to limit the density of heat era, While slender-disk lasers work greatest with hugely doped crystals. Quite a few laser products don't reach the total functionality probable for the reason that such specifics haven't been properly labored out.
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In addition, some adaptability is dropped in experiments if 1 simply cannot try out absorbers with different thickness or doping focus, for instance, without the need of exchanging the laser crystal by itself.
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 in the get medium are most advantageous depend upon various elements. The available pump supply (type of laser diode or lamp) as well as the envisaged pumping arrangement are essential variables, but the material alone also has some impact. By way of example, titanium–sapphire lasers need to be pumped with large intensities, for which the form of the transversely cooled rod, operated with fairly compact pump and laser beam diameter, is more suitable than e.
These tables comprise only the commonest host crystals; a lot of Other people exist, which can be much less commonly employed.
The most typical laser-Energetic here uncommon earth ions and host media along with some normal emission wavelengths are revealed in the subsequent table:
A number of laser crystal resources are already shown the place some saturable absorber content is incorporated for passive Q switching of the laser.
For many causes, composite crystals are becoming preferred. These Possess a spatially different chemical composition and might 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 clear that distinctive purposes produce extremely diverse demands on laser gain media. For that reason, a wide selection of different crystals are used, and building the best alternative is important for constructing lasers with the best possible efficiency.
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。