The Greatest Guide To CLBO Crystal
The Greatest Guide To CLBO Crystal
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All-stable-state ultraviolet lasers have already been commonly Utilized in the fields of mechanical flaw detection, lithography, micromachining and medication for some great benefits of modest quantity, prolonged daily life, substantial efficiency, good beam quality, large tuning and slender spectral line, etcetera. Making use of large energy near-infrared coherent gentle source as the basic frequency source based upon nonlinear tuning know-how, making ultraviolet coherent radiation by multistage frequency conversion is considered an important strategy to develop the ultraviolet coherent mild supply.
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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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On the opposite side, the ability scaling of the NIR laser is an additional aspect to improve the typical ability in the 193-nm DUV laser. Due to the not enough the large-power amplification Resolution of your NIR laser (as an example at 1553 nm), nonlinear frequency procedures which include optical parameter oscillation (OPO) could possibly be applied to produce a wavelength converter by shifting the wavelength from one μm to the specified wavelength as well as obtaining relative larger electricity [21]. Just lately, a diamond Raman laser confirmed its potential in accomplishing a significant ability in addition to a high conversion performance within the 1st Stokes of your one-μm laser [22,23], which suggests the possibility to be used within the 193-nm DUV laser generation thanks to its large Raman attain and enormous frequency change.
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Additionally, combining the solid-condition laser with other nonlinear course of action for example stimulated Raman scattering, NIR lasers could be attained at new wavelengths with superior energy and substantial beam excellent, which was analyzed by the proof-of-principle experiment. This Raman laser scheme offers a fresh path to the significant-ability DUV laser, especially at the wavelength of 193 nm.
The beam profile shown in Figure 7b demonstrated a fantastic beam high quality as among the list of deserves of Raman laser, which might be advantageous to create a 193-nm DUV laser with a high quality beam.
The conversion effectiveness from basic NIR to DUV is from 5% to 36% according to the claimed brings about Table 1. Expanding the conversion efficiency will decrease the stress on the design and set up of the fundamental laser amplifier plus the electric powered electrical power usage. An excellent beam excellent of the fundamental laser will also contribute to your escalating on the conversion efficiency and the appropriate power depth from the NIR and green laser from the SHG and FHG method, respectively. The best conversion efficiencies from NIR to green and environmentally friendly to DUV laser by use of CLBO crystal are 70% and close to fifty%, respectively [12], which corresponds more info to the conversion effectiveness of 35% from fundamental to DUV.
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