All-sound-point out ultraviolet lasers are extensively used in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of modest quantity, prolonged life, large efficiency, great beam high-quality, large tuning and narrow spectral line, and many others. Using higher power in the vicinity of-infrared coherent mild resource as the basic frequency source dependant on nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is thought to be a significant approach to establish the ultraviolet coherent light supply.

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According to the evidence-of-basic principle experiment, the conversion performance of 23% implied the opportunity of reaching substantial-electric power at the 2nd Stokes wavelength of the Raman laser. Should the pump laser of 1078 nm could be obtained at the typical electrical power of 50 W, the output energy of its 2nd Stokes wavelength at 1512 nm might be a lot more than 10 W. The design of the Raman laser cavity should be optimized in order to steer clear of the hurt of your M1 and diamond floor.

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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LBO is usually a great nonlinear crystal which is usually placed on the SHG from the NIR for the environmentally friendly. The DUV laser is usually realized by two phases of SFG while in the LBO crystals considering the fact that there isn't any stage-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm into the DUV directly by SHG [sixteen]. Recently, the NSBBF crystal has also shown its potential to acquire a superior conversion performance from 532 nm to 266 nm. The stroll-off angle and deff in the NSBBF are Virtually similar to People of CLBO [17].

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In the scientific and industrial purposes, the beam high-quality of your DUV laser is usually a very important parameter. Significantly, the beam excellent on the DUV laser drastically affects the laser machining success. The beam high quality of the DUV laser is set by that of the fundamental laser plus the crystal for the frequency conversion. Not long ago, a large-power DUV laser (>10 W) at 258 nm was reported by using a beam quality of M2 < 1.5, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a greater laser machining outcome as compared to the prior DUV lasers with more substantial M2.

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Its UV absorption edge reaches a hundred and eighty nm. The productive nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals may be developed through the stoichiometric soften with lessen viscosity.

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