All-good-point out ultraviolet lasers happen to be commonly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the advantages of compact quantity, extended daily life, high efficiency, fantastic beam top quality, large tuning and narrow spectral line, and many others. Utilizing large ability close to-infrared coherent gentle resource as the elemental frequency resource determined by nonlinear tuning engineering, making ultraviolet coherent radiation by multistage frequency conversion is regarded as a vital solution to create the ultraviolet coherent light resource.
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We summarized the current improvement position with the high-ability DUV laser equally at the wavelength of FHG on the one-μm laser and at 193 nm. The current progress of the stable-condition/fiber laser, along with the nonlinear optical crystals, prompts not simply the average power but in addition the beam high-quality (coherence) from the DUV lasers to an unprecedented degree.
全固态紫外激光器以其体积小、寿命长、效率高、光束质量好、调谐范围宽、谱线窄等优点，广泛应用于机械探伤、光刻、微加工和医学等领域，等，利用大功率近红外相干光源作为基于非线性调谐技术的基频源，通过多级变频产生紫外相干辐射被认为是发展紫外相干光源的重要途径。紫外相干光源的关键问题是研制紫外波段的非线性光学变频晶体。非线性光学晶体是实现频率变换的条件之一，因此对非线性光学晶体的生长、尺寸、损伤电阻、转换效率和允许的参数范围提出了越来越高的要求。
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Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Just about every laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
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The heartbeat period of the second Stokes gentle was shortened to five ns as shown in Figure 7a, just one-shot photo in the oscilloscope, which is a typical phenomenon in Raman laser [44] even though the heart beat period on the pump laser was 10 ns.
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The beam profile revealed in Determine 7b shown a fantastic beam high-quality as one of the deserves of Raman laser, which might be useful to make a 193-nm DUV laser with a high quality beam.
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The event from the 193-nm laser was shown by levels of SFG. To be able to scale the DUV laser electricity effectively, a fresh principle of your 193-nm DUV laser generation is presented depending on the diamond Raman laser.