In this particular paper, The brand new lapping slurry and sharpening slurry are introduced. And also the deliquescence degree of CLBO is fallen to most affordable. A different Operating technological innovation can be adopted. Soon after rough polishing, the concentration of extremely-precision sharpening slurry is increased properly. So does the extremely-precision sharpening pace, and also the wiping speed is quicker than the deliquescence velocity. The CLBO crystal area roughness can realize 1nm and preserve the surface area high quality well. Accessibility by way of your institution
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In accordance with the evidence-of-basic principle experiment, the conversion efficiency of 23% implied the potential of acquiring higher-electric power at the 2nd Stokes wavelength of the Raman laser. In the event the pump laser of 1078 nm may be obtained at the common electric power of 50 W, the output electrical power of its 2nd Stokes wavelength at 1512 nm may be much more than ten W. The look of the Raman laser cavity ought to be optimized in order to steer clear of the problems from the M1 and diamond area.
The average electricity in the NIR laser continue to has the likely to generally be improved to tens of watts which include 70 W [26] Should the double-pass configuration can be utilized for that Yb:YAG SCF amplifier stage. For this reason, In the event the conversion performance of 31% from NIR to DUV can be even now managed at this larger power problem, the standard output ability in the DUV laser at 258 nm could be in excess of twenty W, which might be considered a extraordinary energy stage with the DUV laser and result in the unanticipated DUV laser machining final results. Additionally, for prime-electricity DUV laser, the UV destruction of your nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is another important parameter for long term and secure operation.
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LBO can also be a wonderful nonlinear crystal which is always applied to the SHG from the NIR on the environmentally friendly. The DUV laser is often understood by two stages of SFG while in the LBO crystals since there is absolutely no section-matching angle for LBO to transform the inexperienced laser at 515 nm or 532 nm to your DUV instantly by SHG [16]. Not long ago, the NSBBF crystal has also demonstrated its likely to get a significant conversion effectiveness from 532 nm to 266 nm. The stroll-off angle and deff from the NSBBF are Nearly similar to Those people of CLBO [seventeen].
On the opposite side, the ability scaling on the NIR laser is an additional facet to boost click here the average ability of the 193-nm DUV laser. Because of the not enough the substantial-energy amplification Alternative on the NIR laser (for instance at 1553 nm), nonlinear frequency procedures such as optical parameter oscillation (OPO) may very well be placed on develop a wavelength converter by shifting the wavelength from one μm to the desired wavelength and obtaining relative better electricity [21]. Lately, a diamond Raman laser confirmed its means in attaining a superior electrical power plus a higher conversion effectiveness with the 1st Stokes with the one-μm laser [22,23], which suggests the likelihood to get utilized while in the 193-nm DUV laser technology thanks to its superior Raman attain and enormous frequency shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics of your Nd:YAG essential laser wavelength. In order to enrich the damage threshold, lower CLBO surface roughness, by ultra-precision machining, is needed. Because the CLBO crystal has easy hydroscopic reaction and micro scratches in machining, extremely-specific machining in the CLBO crystal is usually a tricky technological trouble.
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