All-strong-state ultraviolet lasers have already been broadly used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of small quantity, extensive everyday living, high performance, superior beam excellent, huge tuning and slim spectral line, and so on. Employing significant electric power around-infrared coherent light supply as the elemental frequency source dependant on nonlinear tuning technological innovation, making ultraviolet coherent radiation by multistage frequency conversion is thought to be a crucial approach to produce the ultraviolet coherent light supply.
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For example, The present concave OC could be replaced by a aircraft mirror which could mitigate the power density over the surface area of M1 as well as diamond. In addition, applying large problems threshold coatings for M1 and diamond would also improve the output electrical power with no damages. Then, the NIR laser with the 2nd Stokes wavelength might be high sufficient, and also its fantastic beam high-quality, to generate the final DUV laser at 193 nm with a higher typical energy.
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On one other facet, the ability scaling on the NIR laser is another aspect to boost the typical electric power with the 193-nm DUV laser. Due to the insufficient the substantial-power amplification solution on the NIR laser (such as at 1553 nm), nonlinear frequency procedures like optical parameter oscillation (OPO) might be applied website to establish a wavelength converter by shifting the wavelength from one μm to the desired wavelength together with acquiring relative increased electric power [21]. Recently, a diamond Raman laser confirmed its ability in achieving a higher energy as well as a large conversion effectiveness with the 1st Stokes on the 1-μm laser [22,23], which means the likelihood for being applied in the 193-nm DUV laser technology thanks to its significant Raman obtain and enormous frequency shift.
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Tunable ultraviolet laser resource dependant on solid-point out dye laser technologies and CsLiB6O10 harmonic generation
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