The best Side of CLBO Crystal

The best Side of CLBO Crystal

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All-strong-state ultraviolet lasers have already been commonly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of tiny volume, long lifestyle, high performance, fantastic beam high-quality, large tuning and slim spectral line, and so on. Utilizing high electric power around-infrared coherent light supply as the fundamental frequency source dependant on nonlinear tuning technological know-how, creating ultraviolet coherent radiation by multistage frequency conversion is considered to be an essential strategy to create the ultraviolet coherent light source.

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We summarized The existing growth status with the large-energy DUV laser both of those at the wavelength of FHG of the 1-μm laser and at 193 nm. The recent growth of the reliable-point out/fiber laser, plus the nonlinear optical crystals, prompts don't just the common ability but in addition the beam high-quality (coherence) in the DUV lasers to an unparalleled amount.

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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Both equally the 1040 nm and 1078 nm laser come from a single dual-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped components amplifier, respectively.

On another side, the facility scaling on the NIR laser is an additional factor to boost the typical power from the 193-nm DUV laser. Because of the deficiency of the significant-ability amplification Alternative with the NIR laser (by way of example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) might be applied to establish a wavelength converter by shifting the wavelength from one μm to the desired wavelength as well as obtaining relative increased electric power [21]. Just lately, a diamond Raman laser showed its ability in acquiring a higher electricity in addition to a higher conversion efficiency with the 1st Stokes with the one-μm laser [22,23], which suggests the chance to become applied inside the 193-nm DUV laser generation as a result of its substantial Raman achieve and huge frequency shift.

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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of your Nd:YAG essential laser wavelength. So that you can greatly enhance the injury threshold, very low CLBO floor roughness, by ultra-precision machining, is necessary. Since the CLBO crystal has straightforward hydroscopic response and micro scratches in machining, extremely-precise machining of the CLBO crystal is usually a tricky specialized problem.

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The conversion efficiency from essential NIR to DUV is from five% to 36% based on the reported ends in Table 1. Increasing the conversion effectiveness will reduce the load on the look and setup of the basic laser amplifier along with the electrical power intake. A very good beam high-quality of the fundamental laser can even add towards the rising of your conversion efficiency in addition to the suitable electricity depth with the NIR and check here environmentally friendly laser during the SHG and FHG process, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds for the conversion effectiveness of 35% from basic to DUV.

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