The best Side of CLBO Crystal
The best Side of CLBO Crystal
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When compared to BBO it attributes more substantial spectral and temperature acceptance, superior angle tolerance, in addition to a lesser stroll-off angle. from 3289 $ shipping
We summarized The present progress standing of your superior-electrical power DUV laser equally in the wavelength of FHG in the 1-μm laser and at 193 nm. The current growth with the stable-point out/fiber laser, along with the nonlinear optical crystals, prompts don't just the average power and also the beam excellent (coherence) in the DUV lasers to an unprecedented degree.
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。
Alternatively, the beam top quality of this higher electric power DUV laser would grow to be even worse as a consequence of far more major thermal and nonlinear effects. Hence, the frequency conversion processes really should be carefully designed to mitigate the aforementioned outcomes. Thus, a superior-ability DUV laser in the FHG of 1 μm with an excellent beam top quality could be acquired and may be effective for obtaining the shorter wavelength DUV lasers for example 193 nm by SFG.
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While in the scientific and industrial purposes, the beam good quality of the DUV laser is usually a significant parameter. Especially, the beam high quality of the DUV laser dramatically impacts the laser machining benefits. The beam quality on the DUV laser is determined by that of the basic laser plus the crystal for the frequency conversion. A short while ago, a substantial-electricity DUV laser (>10 W) at 258 nm was noted with a beam quality of M2 < one.5, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would bring on a better laser machining outcome when compared with the previous DUV lasers with larger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG fundamental laser wavelength. As a way to enhance the problems threshold, reduced CLBO floor roughness, by ultra-precision machining, is needed. Since the CLBO crystal has quick hydroscopic reaction and micro scratches in machining, ultra-precise machining with the CLBO crystal is often a complicated technical problem.
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The conversion effectiveness from basic NIR to DUV is from 5% to 36% in accordance with the noted results in Desk 1. Increasing the conversion effectiveness will reduce the load on the look and setup of the elemental laser amplifier together with the electric power usage. A very good beam top quality of the elemental laser can even contribute towards the growing with the conversion effectiveness together with the appropriate electric power intensity from the NIR and environmentally friendly laser inside the SHG and FHG procedure, respectively. The best conversion efficiencies from NIR to inexperienced and green to DUV laser by usage of CLBO crystal are 70% and all around fifty%, respectively [12], which corresponds into the conversion efficiency of 35% from elementary to DUV.
The event with the 193-nm laser was demonstrated by levels of SFG. In an effort to scale the DUV laser electricity effectively, a different principle from the 193-nm DUV laser era is presented determined by the diamond Raman laser.