Within this paper, The brand new lapping slurry and polishing slurry are launched. And the deliquescence degree of CLBO is fallen to least expensive. A brand new Doing the job know-how is usually adopted. Following tough sprucing, the focus of extremely-precision sharpening slurry is greater thoroughly. So does the ultra-precision sharpening pace, along with the wiping speed is faster compared to the deliquescence velocity. The CLBO crystal area roughness can reach 1nm and retain the surface area high quality well. Access by your institution
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Based on the evidence-of-basic principle experiment, the conversion performance of 23% implied the possibility of obtaining superior-energy at the second Stokes wavelength from the Raman laser. In the event the pump laser of 1078 nm may be acquired at the common electricity of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm could possibly be a lot more than 10 W. The look with the Raman laser cavity really should be optimized so as to stay away from the damage with the M1 and diamond surface area.
For example, The present concave OC could be replaced by a airplane mirror which could mitigate the ability density within the surface of M1 as well as diamond. Additionally, making use of high problems threshold coatings for M1 and diamond would also improve the output ability without any damages. Then, the NIR laser with the 2nd Stokes wavelength could possibly be high sufficient, together with its great beam excellent, to generate the final DUV laser at 193 nm that has a high common electric power.
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LBO is usually a superb nonlinear crystal which is usually placed on the SHG from the NIR towards the environmentally friendly. The DUV laser is frequently recognized by two levels of SFG inside the LBO crystals considering the fact that there is no period-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to your DUV right by SHG [sixteen]. A short while ago, the NSBBF crystal has also proven its likely to acquire a higher conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff on the NSBBF are almost similar to People of CLBO [seventeen].
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In the scientific and industrial applications, the beam quality of the DUV laser is also an important parameter. Particularly, the beam quality of your DUV laser considerably has an effect on the laser machining effects. The beam good quality in the DUV laser is decided by that of the basic laser and also the crystal with the frequency conversion. Just lately, a higher-electric power DUV laser (>10 W) at 258 nm was described having a beam excellent of M2 < one.5, which was produced by FHG of the Yb:YAG laser at 1030 nm utilizing the CLBO crystal [13]. This laser would produce a better laser machining final result compared to the former DUV lasers with greater M2.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG elementary laser wavelength. So as to enrich the hurt threshold, lower CLBO surface area roughness, by extremely-precision machining, is required. Because the CLBO crystal has quick hydroscopic reaction and micro scratches in machining, extremely-exact machining in the more info CLBO crystal is really a difficult complex difficulty.
The beam profile shown in Determine 7b shown a great beam good quality as on the list of deserves of Raman laser, which might be effective to generate a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches one hundred eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as big as that of KDP. CLBO crystals can be developed from your stoichiometric soften with decrease viscosity.
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