The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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Within this paper, The brand new lapping slurry and sprucing slurry are introduced. Along with the deliquescence diploma of CLBO is fallen to least expensive. A completely new Functioning technology is additionally adopted. Immediately after rough polishing, the concentration of ultra-precision polishing slurry is elevated properly. So does the ultra-precision sprucing velocity, plus the wiping pace is faster compared to deliquescence speed. The CLBO crystal surface roughness can achieve 1nm and retain the area excellent perfectly. Access by way of your institution
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We summarized The present growth status with the large-energy DUV laser both of those in the wavelength of FHG in the one-μm laser and at 193 nm. The latest enhancement of your reliable-point out/fiber laser, plus the nonlinear optical crystals, prompts not simply the common ability but additionally the beam good quality (coherence) of the DUV lasers to an unprecedented degree.
The standard electric power on the NIR laser nevertheless has the possible to become enhanced to tens of watts for example 70 W [26] if the double-go configuration may be used to the Yb:YAG SCF amplifier phase. That's why, When the conversion effectiveness of 31% from NIR to DUV might be however taken care of at this bigger electrical power ailment, the typical output electric power of the DUV laser at 258 nm could possibly be much more than twenty W, which might be considered a impressive electrical power stage for the DUV laser and bring about the unanticipated DUV laser machining effects. Moreover, for top-electrical power DUV laser, the UV destruction of the nonlinear crystal, including the windows for CLBO crystal as well as the mirrors, is another important parameter for long run and stable Procedure.
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Both equally the 1040 nm and 1078 nm laser come from a person dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by stages of fiber amplifier and Yb-doped elements amplifier, respectively.
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From the scientific and industrial apps, the beam excellent with the DUV laser is likewise a significant parameter. Specially, the beam good quality in the DUV laser drastically affects the laser machining results. The beam excellent in the DUV laser is decided by that of the fundamental laser as well as crystal to the frequency conversion. Lately, a superior-electrical power DUV laser (>ten W) at 258 nm was noted which has a beam top quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in an even better laser machining result when compared with the prior DUV lasers with larger sized M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics from the Nd:YAG fundamental laser wavelength. To be able to improve the damage threshold, low CLBO area roughness, by ultra-precision machining, is needed. As the CLBO crystal has quick hydroscopic response and micro scratches in machining, extremely-precise machining of your CLBO crystal is usually a hard specialized trouble.
The beam profile revealed in Determine 7b shown a very good beam quality as on the list of merits of Raman laser, which would be useful to make a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches a hundred and eighty nm. The powerful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as substantial as that of KDP. CLBO crystals could be developed from your stoichiometric soften with reduced viscosity.
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