Laser Crystal Secrets
Laser Crystal Secrets
Blog Article
The commonest laser-active unusual earth ions and host media along with some usual emission wavelengths are shown in the following table:
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为了使激光器有效运作，需要有效管理运行过程中产生的热量。具有良好热导率的激光晶体可以更有效地散热，防止热透镜效应或断裂。
On top of that, some versatility is misplaced in experiments if a person are not able to try out absorbers with unique thickness or doping concentration, such as, with no exchanging the laser crystal 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：
晶体的光学质量对激光器的有效运行至关重要。晶体中的缺陷或杂质可能导致光散射、吸收甚至损坏晶体。高光学质量确保了稳定和高质量的激光束。
激光晶体的损伤阈值与其能承受的最大光强有关，而不会遭受物理或结构损伤。高损伤阈值对于确保高功率激光应用的耐久性和长寿命至关重要。
g. a thin disk. As A further illustration, Q-switched lasers reach a better populace density in the upper laser level and so are consequently additional delicate to quenching results and Electricity transfer procedures; for that reason, a lower doping density is usually suitable for these equipment. For high-electricity lasers, decreased doping densities are frequently accustomed to Restrict the density of warmth technology, Though thin-disk lasers get the job done finest with really doped crystals. A lot of laser merchandise never reach the entire performance likely for the reason that this kind of information haven't been properly worked out.
Laser modeling and simulation can be utilized to reliably ascertain the the best possible crystal Proportions, doping density And maybe values of more parameters.
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For quasi-3-amount laser acquire media as well as a few-amount gain media, a single typically ought to Restrict the duration to a worth which happens to be too quick for successful pump absorption, as reabsorption outcomes would or else spoil the overall performance. For side pumping, supplemental concerns occur into Participate in; In addition to economical pump absorption, it is click here important to acquire a suitable spatial condition of your attain profile.
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The medium ought to have a higher transparency (lower absorption and scattering) during the wavelength areas of pump and laser radiation, and excellent optical homogeneity. To some extent, this relies on the quality of the fabric, based on facts of the fabrication process.
It may be oriented for near perpendicular incidence of your laser beam, or at Brewster's angle. It may be fixed in certain reliable mount which also acts being a warmth sink. Much larger crystals tend to be employed for facet pumping e.g. with substantial-ability diode bars.
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