The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-stable-point out ultraviolet lasers are already extensively Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of tiny volume, long life, large efficiency, great beam high-quality, huge tuning and slender spectral line, and so forth. Utilizing high electrical power around-infrared coherent gentle resource as the basic frequency resource determined by nonlinear tuning technological know-how, producing ultraviolet coherent radiation by multistage frequency conversion is regarded as a very important method to develop the ultraviolet coherent light-weight resource.
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The normal energy of the NIR laser nevertheless has the likely being improved to tens of watts which include 70 W [26] In the event the double-go configuration may very well be used for your Yb:YAG SCF amplifier phase. Hence, In the event the conversion effectiveness of 31% from NIR to DUV could possibly be continue to taken care of at this better ability situation, the typical output electrical power in the DUV laser at 258 nm might be over 20 W, which would become a remarkable energy level for the DUV laser and lead to the unanticipated DUV laser machining outcomes. What's more, for prime-energy DUV laser, the UV destruction on the nonlinear crystal, including the Home windows for CLBO crystal and also the read more mirrors, is yet another critical parameter for long term and steady Procedure.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics on the Nd:YAG elementary laser wavelength. In an effort to enrich the problems threshold, very low CLBO floor roughness, by ultra-precision machining, is needed. Since the CLBO crystal has straightforward hydroscopic reaction and micro scratches in machining, extremely-precise machining of the CLBO crystal is usually a hard technical challenge.
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The conversion effectiveness from essential NIR to DUV is from 5% to 36% in accordance with the documented results in Desk 1. Raising the conversion efficiency will decrease the stress on the design and set up of the elemental laser amplifier plus the electric powered electrical power intake. A good beam top quality of the elemental laser will likely contribute for the raising from the conversion effectiveness together with the right energy intensity in the NIR and inexperienced laser from the SHG and FHG process, respectively. The best conversion efficiencies from NIR to green and green to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds into the conversion performance of 35% from elementary to DUV.
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