A Simple Key For CLBO Crystal Unveiled
A Simple Key For CLBO Crystal Unveiled
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With this paper, the new lapping slurry and sprucing slurry are released. And also the deliquescence diploma of CLBO is fallen to most affordable. A whole new working know-how is usually adopted. Immediately after rough sprucing, the concentration of extremely-precision polishing slurry is amplified correctly. So does the extremely-precision sharpening pace, and the wiping speed is faster than the deliquescence velocity. The CLBO crystal surface area roughness can reach 1nm and hold the surface area top quality nicely. Accessibility via 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 other hand, the beam high-quality of this greater electric power DUV laser would grow to be even worse resulting from a lot more serious thermal and nonlinear results. For this reason, the frequency conversion procedures needs to be thoroughly made to mitigate the aforementioned results. So, a significant-energy DUV laser on the FHG of one μm with a fantastic beam excellent may very well be received and will be useful for acquiring the shorter wavelength DUV lasers such as 193 nm by SFG.
LBO is likewise a superb nonlinear crystal which is usually placed on the SHG from the NIR towards the eco-friendly. The DUV laser is normally understood by two phases of SFG in the LBO crystals since there is absolutely no period-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to the DUV immediately by SHG [sixteen]. A short while ago, the NSBBF crystal has also revealed its opportunity to get a higher conversion performance from 532 nm to 266 nm. The wander-off angle and deff from the NSBBF are Practically similar to those of CLBO [17].
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Within the scientific and industrial programs, the beam high-quality of your DUV laser is usually a very important parameter. Significantly, the beam high-quality with the DUV laser considerably impacts the laser machining outcomes. The beam quality in the DUV laser is determined by that of the elemental laser along with the crystal for your frequency conversion. Recently, a superior-electrical power DUV laser (>ten W) at 258 nm was described by using a beam high quality of M2 < one.five, which was generated by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would bring on a greater laser machining end result in comparison to the preceding DUV lasers with larger sized M2.
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The conversion effectiveness from essential NIR to DUV is from 5% to 36% based on the noted brings about Desk 1. Increasing the conversion effectiveness will lessen the burden on the look and set up of the basic laser amplifier as well as the electrical ability consumption. A superb beam high quality of the basic laser can even add to the rising of your conversion efficiency along with the suitable electric power depth of your NIR and environmentally friendly laser within the SHG and FHG method, respectively. The best conversion efficiencies from NIR to environmentally friendly and inexperienced to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [twelve], which corresponds to your conversion effectiveness of 35% from basic to DUV.
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