All-good-condition ultraviolet lasers have already been broadly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medicine for the benefits of small volume, long lifestyle, high effectiveness, good beam high-quality, broad tuning and slender spectral line, and so on. Utilizing higher power around-infrared coherent gentle source as the fundamental frequency supply determined by nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is regarded as an essential approach to create the ultraviolet coherent light-weight resource.

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We summarized The present improvement position in the superior-electrical power DUV laser both in the wavelength of FHG of the 1-μm laser and at 193 nm. The the latest advancement in the solid-condition/fiber laser, and also the nonlinear optical crystals, prompts don't just the average electricity but also the beam good quality (coherence) in the DUV lasers to an unparalleled stage.

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。

Conversely, the beam quality of this larger electricity DUV laser would grow to be even worse as a consequence of more really serious thermal and nonlinear consequences. For this reason, the frequency conversion processes need to be very carefully built to mitigate the aforementioned results. So, a higher-energy DUV laser within the FHG of 1 μm with a superb beam high-quality could possibly be obtained and can be advantageous for acquiring the shorter wavelength DUV lasers including 193 nm by SFG.

Both the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources click here amplifier, respectively.

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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the most effective non-linear crystal which generates ultraviolet harmonics of the Nd:YAG basic laser wavelength. In an effort to increase the problems threshold, lower CLBO surface area roughness, by ultra-precision machining, is required. Since the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, extremely-exact machining with the CLBO crystal is often a hard technical problem.

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