CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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On this paper, The brand new lapping slurry and sprucing slurry are introduced. Along with the deliquescence diploma of CLBO is fallen to least expensive. A brand new Performing technologies is also adopted. Just after rough sharpening, the concentration of ultra-precision sharpening slurry is amplified thoroughly. So does the extremely-precision sharpening velocity, and also the wiping velocity is faster compared to deliquescence speed. The CLBO crystal surface roughness can reach 1nm and continue to keep the area excellent well. Entry via your establishment
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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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LBO is usually a superb nonlinear crystal which is often placed on the SHG in the NIR on the green. The DUV laser is frequently realized by two stages of SFG during the LBO crystals considering that there is no phase-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to the DUV immediately by SHG [16]. Not long ago, the NSBBF crystal has also demonstrated its likely to get a large conversion efficiency from 532 nm to 266 nm. The stroll-off angle and deff with the NSBBF are Practically just like People of CLBO [17].
On one other facet, the ability scaling from the NIR laser is another element to increase the ordinary electric power on the 193-nm DUV laser. As a result of not enough the substantial-energy amplification Alternative on the NIR laser (for instance at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) could possibly be applied to produce a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength as well as acquiring relative higher ability [21]. Just lately, a diamond Raman laser confirmed its capability in accomplishing a high electrical power and also a significant conversion performance at the 1st Stokes from the 1-μm laser [22,23], which implies the possibility to become applied from the 193-nm DUV laser era as a consequence of its superior Raman attain and enormous frequency change.
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Inside the scientific and industrial apps, the beam excellent with the DUV laser is also a very important parameter. Especially, the beam high quality with the DUV laser radically influences the laser machining final results. The beam high quality of the DUV laser is decided by that of the fundamental laser and the crystal for that frequency conversion. Not too long ago, a high-electric power DUV laser (>10 W) at 258 nm was described having a beam excellent of M2 < 1.5, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would cause a greater laser machining consequence in comparison with the former DUV lasers with greater M2.
The heart beat length of the second Stokes mild was shortened to five ns as demonstrated in Figure 7a, a single-shot photo from your oscilloscope, that is a standard phenomenon in Raman laser [44] while the heart beat duration of your pump laser was 10 ns.
Cesium Lithium Borate (CsLiB6O10 or CLBO) is the best non-linear crystal which generates ultraviolet harmonics of your Nd:YAG elementary laser wavelength. To be able to enrich the hurt threshold, minimal CLBO area roughness, by ultra-precision machining, is needed. As the CLBO crystal has uncomplicated hydroscopic reaction and micro scratches in machining, extremely-exact machining from the CLBO crystal is a complicated complex issue.
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The conversion effectiveness from basic NIR to DUV is from five% to 36% in accordance with the described leads to Desk 1. Expanding the conversion effectiveness will lessen the load on the look and setup of the basic laser amplifier along with the electrical power intake. A very good beam top quality of the elemental laser may also lead into the growing of your conversion efficiency and also the right ability depth from the NIR and eco-friendly laser in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by use of CLBO crystal are 70% and all around fifty%, respectively [12], which corresponds on the conversion effectiveness of 35% from basic to DUV.
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