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全固态紫外激光器以其体积小、寿命长、效率高、光束质量好、调谐范围宽、谱线窄等优点，广泛应用于机械探伤、光刻、微加工和医学等领域，等，利用大功率近红外相干光源作为基于非线性调谐技术的基频源，通过多级变频产生紫外相干辐射被认为是发展紫外相干光源的重要途径。紫外相干光源的关键问题是研制紫外波段的非线性光学变频晶体。非线性光学晶体是实现频率变换的条件之一，因此对非线性光学晶体的生长、尺寸、损伤电阻、转换效率和允许的参数范围提出了越来越高的要求。
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A result of the thermal lens impact from the stable-state lasers, if the heating administration is inadequate, It isn't uncomplicated to obtain the reliable-condition laser using a large energy as well as a superior beam high quality concurrently. Not too long ago, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a large-ability laser at the basic wavelength (one μm) had been understood with a good beam good quality In spite of a TEM00 method beam [4,24], which might be very good candidates for the basic on the DUV laser generation. An additional prospect for the basic may be the high-ability fiber laser which may very well be attained by coherent beam mixture with M2 benefit a lot less than 1.
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What's more, combining the sound-state laser with other nonlinear approach such as stimulated Raman scattering, NIR lasers can be achieved at new wavelengths with high energy and high beam quality, which was analyzed through the proof-of-principle experiment. This Raman laser plan offers a whole new path to the significant-electric power DUV laser, Particularly in the wavelength of 193 nm.
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The conversion efficiency from elementary NIR to DUV is from 5% to 36% in accordance with the noted brings about Table one. Growing the conversion performance will reduce the load on the look and setup of the basic laser amplifier in addition to the electric powered electrical power intake. A great beam excellent of the elemental laser will even lead to your increasing in the conversion effectiveness and the suitable power intensity in the NIR and inexperienced laser from the SHG and FHG system, respectively. The best conversion efficiencies from NIR to environmentally friendly and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds for the conversion efficiency of 35% from fundamental to DUV.
The development with the 193-nm laser was shown by stages of SFG. So that you can scale the DUV laser electrical power correctly, a fresh thought from the 193-nm DUV laser era is introduced based on the diamond Raman laser.