All-stable-state ultraviolet lasers happen to be widely used in the fields of mechanical flaw detection, lithography, micromachining and medicine for some great benefits of small quantity, very long existence, higher performance, fantastic beam excellent, broad tuning and narrow spectral line, etc. Utilizing high energy close to-infrared coherent mild supply as the elemental frequency source based on nonlinear tuning technology, making ultraviolet coherent radiation by multistage frequency conversion is considered to be a significant method to acquire the ultraviolet coherent mild supply.

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We summarized the current development position on the substantial-electrical power DUV laser each at the wavelength of FHG with the one-μm laser and at 193 nm. The current enhancement in the good-state/fiber laser, and also the nonlinear optical crystals, prompts not just the normal energy but in addition the beam high-quality (coherence) from the DUV lasers to an unprecedented amount.

The typical energy of your NIR laser however has the likely to become enhanced to tens of watts including 70 W [26] Should the double-move configuration could possibly be used for that Yb:YAG SCF amplifier stage. Hence, Should the conversion effectiveness of 31% from NIR to DUV could be continue to preserved at this bigger electricity ailment, the typical output electric power of the DUV laser at 258 nm could possibly be in excess of twenty W, which might be a remarkable electrical power level for your DUV laser and cause the unanticipated DUV laser machining effects. Additionally, for high-ability DUV laser, the UV damage on the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is an additional critical parameter for long-lasting and secure Procedure.

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Additionally, combining the strong-condition laser with other nonlinear procedure which include stimulated Raman scattering, NIR lasers could possibly be obtained at new wavelengths with large ability and substantial beam quality, which was tested with the evidence-of-theory experiment. This Raman laser plan delivers a new path to the high-electrical power DUV laser, Specially at the wavelength of 193 nm.

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