During this paper, the new lapping slurry and sharpening slurry are launched. As well as deliquescence degree of CLBO is fallen to most affordable. A new Operating technological innovation is also adopted. Right after rough sharpening, the concentration of ultra-precision polishing slurry is enhanced thoroughly. So does the ultra-precision polishing speed, and the wiping speed is quicker when compared to the deliquescence velocity. The CLBO crystal floor roughness can achieve 1nm and maintain the surface high quality effectively. Access as a result of your establishment
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As an example, the current concave OC could be replaced by a aircraft mirror which could mitigate the ability density to the surface area of M1 and also the diamond. What's more, working with large destruction threshold coatings for M1 and diamond would also Enhance the output electricity with no damages. Then, the NIR laser within the 2nd Stokes wavelength could be significant plenty of, as well as its very good beam high-quality, to make the ultimate DUV laser at 193 nm having a high typical ability.
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LBO can be a wonderful nonlinear crystal which is always placed on the SHG from the NIR for the environmentally friendly. The DUV laser is normally understood by two levels of SFG during the LBO crystals because there is no period-matching angle for LBO to transform the green laser at 515 nm or 532 nm to your DUV directly by SHG [16]. Recently, the NSBBF crystal has also revealed its potential to obtain a large conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff of the NSBBF are Practically just like These of CLBO [17].
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The heart beat period of the next Stokes gentle was shortened to 5 ns as shown in Determine 7a, only one-shot photo from your oscilloscope, which can be a common phenomenon in Raman laser [forty four] although the click here heart beat period of the pump laser was 10 ns.
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The conversion performance from basic NIR to DUV is from five% to 36% according to the noted ends in Table 1. Expanding the conversion efficiency will decrease the stress on the design and setup of the basic laser amplifier as well as the electrical ability consumption. An excellent beam high-quality of the fundamental laser will even lead to your increasing from the conversion efficiency and also the suitable electricity depth on the NIR and inexperienced laser from the SHG and FHG approach, respectively. The best conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from fundamental to DUV.
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