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Based on the evidence-of-principle experiment, the conversion performance of 23% implied the potential for attaining higher-power at the next Stokes wavelength of the Raman laser. If the pump laser of 1078 nm might be received at the normal energy of 50 W, the output electric power of its 2nd Stokes wavelength at 1512 nm could be a lot more than ten W. The design with the Raman laser cavity should be optimized to be able to avoid the injury of your M1 and diamond surface area.
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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On the opposite facet, the ability scaling of your NIR laser is yet another component to increase the common electric power on the 193-nm DUV laser. As a result of insufficient the significant-electric power amplification solution on the NIR laser (such as at 1553 nm), nonlinear frequency procedures for instance optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from one μm to the specified wavelength along with getting relative better electric power [21]. Not too long ago, a diamond Raman laser confirmed its skill in acquiring a significant power and also a high conversion efficiency for the 1st Stokes of the 1-μm laser [22,23], which means the likelihood being applied from the 193-nm DUV laser generation as a consequence of its substantial Raman get and enormous frequency change.
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From the scientific and industrial programs, the beam quality with the DUV laser is additionally an essential parameter. Significantly, the beam top quality of your DUV laser drastically has an effect on the laser machining outcomes. The beam good quality with the DUV laser is decided by that of the elemental laser and also the crystal for your frequency conversion. Just lately, a higher-electricity DUV laser (>10 W) at 258 nm was documented using a beam top quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring about a much better laser machining outcome in comparison to the prior DUV lasers with much larger M2.
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Tunable ultraviolet laser source based on strong-state dye laser know-how and CsLiB6O10 harmonic era
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