Examine This Report on CLBO Crystal
Examine This Report on CLBO Crystal
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In this particular paper, the new lapping slurry and sprucing slurry are released. And the deliquescence degree of CLBO is fallen to least expensive. A fresh Doing the job technological innovation is also adopted. Right after rough sharpening, the concentration of ultra-precision polishing slurry is improved adequately. So does the extremely-precision sprucing pace, plus the wiping pace is faster compared to the deliquescence speed. The CLBO crystal surface roughness can obtain 1nm and retain the area high-quality perfectly. Obtain as a result of your establishment
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We summarized The present enhancement status on the superior-energy DUV laser each for the wavelength of FHG of the 1-μm laser and at 193 nm. The new improvement in the strong-condition/fiber laser, and also the nonlinear optical crystals, prompts not just the typical electricity but in addition the beam good quality (coherence) on the DUV lasers to an unprecedented level.
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。
Then again, the beam high-quality of the higher energy DUV laser would grow to be even worse as a consequence of much more serious thermal and nonlinear effects. Consequently, the frequency conversion procedures should be cautiously created to mitigate the aforementioned outcomes. Consequently, a superior-electric power DUV laser at the FHG of one μm with a superb beam excellent could be obtained and will be helpful for obtaining the shorter wavelength DUV lasers including 193 nm by SFG.
Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Each individual laser is amplified by phases of fiber amplifier and Yb-doped materials amplifier, respectively.
On another side, the facility scaling with the NIR laser is an additional element to increase the normal electricity of your 193-nm DUV laser. Due to insufficient the superior-electricity amplification Resolution on the NIR laser (as an example at 1553 nm), nonlinear frequency procedures for example optical parameter oscillation (OPO) could possibly be placed on develop a wavelength converter by shifting the wavelength from one μm to the desired wavelength and also obtaining relative greater electricity [21]. Lately, a diamond Raman laser confirmed its ability in reaching a large ability and a higher conversion effectiveness on the 1st Stokes on the 1-μm laser [22,23], which suggests the possibility for being applied within the 193-nm DUV laser generation because of its higher Raman gain and huge frequency change.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics of the Nd:YAG fundamental laser wavelength. In order to enhance the destruction threshold, very low CLBO floor roughness, by ultra-precision machining, is necessary. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, ultra-specific machining with the CLBO crystal is actually a tough complex trouble.
The beam profile proven in Figure 7b shown a fantastic beam quality as one of many merits of Raman laser, which might be valuable to produce a 193-nm DUV laser with a read more high quality beam.
The conversion effectiveness from basic NIR to DUV is from 5% to 36% based on the documented ends in Table one. Rising the conversion performance will reduce the load on the look and set up of the elemental laser amplifier along with the electrical power consumption. A fantastic beam excellent of the elemental laser will also contribute on the expanding of the conversion performance as well as the right power depth with the NIR and inexperienced laser from the SHG and FHG course of action, respectively. The very best conversion efficiencies from NIR to eco-friendly and green to DUV laser by use of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds towards the conversion performance of 35% from essential to DUV.
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