All-reliable-condition ultraviolet lasers are already extensively used in the fields of mechanical flaw detection, lithography, micromachining and medicine for the benefits of compact quantity, very long everyday living, significant effectiveness, excellent beam high-quality, vast tuning and slim spectral line, and so on. Using significant ability in the vicinity of-infrared coherent light-weight supply as the basic frequency source dependant on nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is thought to be an essential solution to build the ultraviolet coherent light-weight source.
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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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Due to thermal lens influence from the reliable-condition lasers, When the heating administration is inadequate, It's not at all uncomplicated to get the strong-point out laser with a significant electrical power and a substantial beam high quality concurrently. Recently, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a high-electric power laser at the fundamental wavelength (1 μm) had been understood with an excellent beam good quality In spite of a TEM00 manner beam [four,24], which would be very good candidates for the elemental of the DUV laser era. A different prospect for the fundamental would be the significant-power fiber laser which could be accomplished by coherent beam combination with M2 benefit fewer than one.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics on the Nd:YAG basic laser wavelength. In an effort to increase the injury threshold, low CLBO area roughness, by ultra-precision machining, is necessary. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-specific machining in the CLBO crystal is a tricky specialized trouble.
The beam profile proven in Determine 7b shown a great beam excellent as among the deserves of Raman laser, which might be helpful to make a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals can be grown within the stoichiometric melt with reduced viscosity.
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