Within this paper, the new lapping slurry and sharpening slurry are released. And also the deliquescence degree of CLBO is fallen to cheapest. A new working technologies is usually adopted. Right after rough sprucing, the concentration of ultra-precision polishing slurry is elevated adequately. So does the extremely-precision sharpening pace, along with the wiping velocity is faster compared to deliquescence speed. The CLBO crystal surface roughness can attain 1nm and maintain the surface high-quality well. Access as a result of your institution
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For example, the current concave OC could get replaced by a airplane mirror which could mitigate the ability density about the surface of M1 as well as diamond. Also, applying substantial harm threshold coatings for M1 and diamond would also Increase the output energy with none damages. Then, the NIR laser in the 2nd Stokes wavelength can be higher more than enough, as well as its fantastic beam top quality, to generate the final DUV laser at 193 nm using a superior typical energy.
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Both of those the 1040 nm and 1078 nm laser originate from just one dual-wavelength Yb-doped fiber laser. Every laser is amplified by stages of fiber amplifier and Yb-doped materials amplifier, respectively.
On the other side, the power scaling of the NIR laser is yet another part to improve the common energy of your 193-nm DUV laser. Due to insufficient the high-electricity amplification Answer of your NIR laser (by way of example at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from one μm to the specified wavelength together with obtaining relative better energy [21]. Not long ago, a diamond Raman laser showed its potential in acquiring a higher website electric power along with a substantial conversion performance at the 1st Stokes in the 1-μm laser [22,23], which implies the possibility to become applied within the 193-nm DUV laser generation due to its high Raman gain and enormous frequency shift.
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Within the scientific and industrial purposes, the beam high-quality on the DUV laser is additionally a very important parameter. Specially, the beam good quality from the DUV laser dramatically influences the laser machining success. The beam high-quality in the DUV laser is decided by that of the fundamental laser as well as crystal with the frequency conversion. Just lately, a high-electricity DUV laser (>ten W) at 258 nm was reported using a beam excellent of M2 < one.five, which was created by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would cause a far better laser machining result when compared to the past DUV lasers with larger M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of your Nd:YAG elementary laser wavelength. As a way to improve the destruction threshold, lower CLBO surface area roughness, by extremely-precision machining, is needed. As the CLBO crystal has effortless hydroscopic response and micro scratches in machining, ultra-specific machining in the CLBO crystal is a tricky technical difficulty.
Tunable ultraviolet laser resource dependant on strong-condition dye laser technological innovation and CsLiB6O10 harmonic era
Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about twice as substantial as that of KDP. CLBO crystals might be developed from your stoichiometric soften with reduced viscosity.
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