5 Easy Facts About CLBO Crystal Described
5 Easy Facts About CLBO Crystal Described
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During this paper, the new lapping slurry and polishing slurry are released. Along with the deliquescence diploma of CLBO is fallen to cheapest. A new Functioning know-how is additionally adopted. Immediately after tough sharpening, the concentration of extremely-precision sharpening slurry is amplified properly. So does the ultra-precision sprucing velocity, as well as the wiping speed is faster compared to the deliquescence speed. The CLBO crystal surface roughness can achieve 1nm and maintain the surface high-quality very well. Entry by means of your institution
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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。
On the flip side, the beam high quality of the bigger electrical power DUV laser would come to be worse due to extra significant thermal and nonlinear outcomes. As a result, the frequency conversion processes ought to be meticulously meant to mitigate the aforementioned consequences. Thus, a higher-electrical power DUV laser within the FHG of one μm with a great beam high quality might be obtained and may be effective for getting the shorter wavelength DUV lasers for instance 193 nm by SFG.
LBO can also be an outstanding nonlinear crystal which is always applied to the SHG through the NIR into the green. The DUV laser is often recognized by two phases of SFG during the LBO crystals because there is no stage-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm for the DUV right by SHG [sixteen]. Just lately, the NSBBF crystal has also demonstrated its likely to get a large conversion efficiency from 532 nm to 266 nm. The wander-off angle and deff of your NSBBF are Just about just like Those people of CLBO [seventeen].
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Within the scientific and industrial programs, the beam top quality from the DUV laser is additionally a crucial parameter. Especially, the beam high quality of your DUV laser considerably impacts the laser machining outcomes. The beam high-quality on the DUV laser is determined by that of the basic laser as well as the crystal with the frequency conversion. Not long ago, a significant-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would bring on a greater laser machining consequence in comparison to the earlier DUV lasers with much larger M2.
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The conversion performance from basic NIR to DUV is from five% to 36% based on the claimed leads to Desk 1. Rising the conversion efficiency will decrease the stress on the look and setup of the basic laser amplifier along with the electrical ability consumption. A superb beam quality of the fundamental laser may even add into the escalating of the conversion performance in addition to the appropriate electricity depth on the NIR and inexperienced laser during the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to inexperienced and inexperienced to DUV laser by utilization of CLBO crystal are 70% and close to 50%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
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