All-reliable-condition ultraviolet lasers are greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of smaller volume, lengthy existence, higher efficiency, fantastic beam high-quality, large tuning and slender spectral line, and so forth. Utilizing substantial electricity close to-infrared coherent light-weight supply as the fundamental frequency supply depending on nonlinear tuning engineering, building ultraviolet coherent radiation by multistage frequency conversion is considered an important approach to establish the ultraviolet coherent mild supply.
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For example, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density on the area of M1 along with the diamond. In addition, using superior hurt threshold coatings for M1 and diamond would also Enhance the output electricity without any damages. Then, the NIR laser for the 2nd Stokes wavelength might be superior ample, as well as its great beam high-quality, to make the ultimate DUV laser at 193 nm by using a high average electrical power.
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On the other aspect, the power scaling of your NIR laser is yet another part to raise the typical power with the 193-nm DUV laser. As a result of not enough the substantial-electric power amplification Answer of the NIR laser (one example is at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) may very well be placed on build a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative larger electricity [21]. Not long ago, a diamond Raman laser confirmed its skill in obtaining a significant power along with a higher conversion efficiency within the 1st Stokes with the 1-μm laser [22,23], which implies the likelihood being utilized while in the 193-nm DUV laser generation due to its higher Raman gain and enormous frequency shift.
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Tunable ultraviolet laser supply determined by reliable-condition dye laser know-how and CsLiB6O10 harmonic era
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