CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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Having said that, to be able to process the crystal may be very State-of-the-art manufacturing procedures are demanded. Considering that the dawn of the crystal, engaged on this obstacle, we are now the sole company in the world which might be processed On this crystal.
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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 result within the stable-condition lasers, In case the heating administration is insufficient, it is not effortless to get the good-condition laser using a large energy along with a high beam quality at the same time. Just lately, with the development of the thin disk laser and one-crystal fiber (SCF) laser, a high-energy laser at the basic wavelength (1 μm) had been realized with a good beam quality Despite having a TEM00 mode beam [four,24], which would be very good candidates for the basic of your DUV laser generation. A different prospect for the elemental is definitely the higher-electric power fiber laser which could be reached by coherent beam mix with M2 price a lot less than 1.
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From the scientific and industrial purposes, the beam high quality on the DUV laser can be a significant parameter. Specifically, the beam high-quality in the DUV laser dramatically impacts the laser machining effects. The beam high-quality of your DUV laser is set by that of the basic laser as well as crystal for that frequency conversion. Not too long ago, a superior-electrical power DUV laser (>ten W) at 258 nm was documented using a beam good quality of M2 < one.five, which was produced by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would result in a much better laser machining end result when compared to the preceding DUV lasers with much larger M2.
The pulse period of the 2nd Stokes mild was shortened to 5 ns as revealed in Determine 7a, an individual-shot photograph in the oscilloscope, and that is a standard phenomenon in Raman laser [forty four] whilst the heart beat duration on the pump laser was 10 ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics in the Nd:YAG essential laser wavelength. So that you can increase the harm threshold, reduced CLBO surface area roughness, by ultra-precision machining, is required. As the CLBO crystal has easy hydroscopic reaction and micro scratches in machining, extremely-precise machining of your CLBO crystal can be a difficult complex trouble.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% based on the claimed results in Desk 1. Growing the conversion effectiveness will decrease the load on the design and set up of the fundamental laser amplifier in addition to the electric electrical power usage. A great beam top quality of the fundamental laser may also lead towards the increasing with the conversion effectiveness and the suitable power intensity of your NIR and inexperienced laser within the SHG and FHG course of action, respectively. The highest conversion efficiencies from NIR to environmentally friendly and green to DUV laser by utilization of CLBO crystal are 70% and about fifty%, respectively [twelve], which corresponds to your conversion efficiency of 35% from elementary to DUV.
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