The Ultimate Guide To CLBO Crystal
The Ultimate Guide To CLBO Crystal
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Nevertheless, as a way to method the crystal is incredibly Superior manufacturing techniques are demanded. For the reason that dawn of this crystal, focusing on this obstacle, we are now the one business on the globe that may be processed During this crystal.
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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 good quality of the greater electrical power DUV laser would become worse as a result of much more significant thermal and nonlinear outcomes. That's why, the frequency conversion processes need to be carefully intended to mitigate the aforementioned consequences. Thus, a higher-electricity DUV laser within the FHG of one μm with a very good beam quality may be received and may be effective for getting the shorter wavelength DUV lasers like 193 nm by SFG.
Equally the 1040 nm and 1078 nm laser come from one particular dual-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped elements amplifier, respectively.
On the opposite facet, the ability scaling on the NIR laser is another part to raise the average electricity of the 193-nm DUV laser. Mainly because of the deficiency of the superior-electrical power amplification Alternative in the NIR laser (one example is at 1553 nm), nonlinear frequency processes including optical parameter oscillation (OPO) may here very well be placed on build a wavelength converter by shifting the wavelength from one μm to the specified wavelength as well as acquiring relative better power [21]. Not too long ago, a diamond Raman laser showed its skill in attaining a superior energy and also a high conversion efficiency on the 1st Stokes of the 1-μm laser [22,23], which implies the possibility to become applied within the 193-nm DUV laser generation because of its higher Raman obtain and huge frequency shift.
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Cesium Lithium Borate (CsLiB6O10 or CLBO) is the simplest non-linear crystal which generates ultraviolet harmonics with the Nd:YAG essential laser wavelength. So as to increase the damage threshold, reduced CLBO floor roughness, by ultra-precision machining, is needed. Since the CLBO crystal has simple hydroscopic response and micro scratches in machining, extremely-precise machining from the CLBO crystal is often a hard specialized issue.
The beam profile revealed in Determine 7b shown a very good beam quality as one of many deserves of Raman laser, which might be effective to generate a 193-nm DUV laser with a high quality beam.
The conversion performance from basic NIR to DUV is from five% to 36% according to the claimed leads to Desk 1. Raising the conversion efficiency will decrease the stress on the design and set up of the elemental laser amplifier plus the electric powered electrical power intake. An excellent beam high-quality of the fundamental laser may even add to the escalating on the conversion performance together with the appropriate electric power depth of the NIR and eco-friendly laser while in the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to environmentally friendly and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and around fifty%, respectively [twelve], which corresponds to your conversion performance of 35% from elementary to DUV.
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