CLBO Crystal Things To Know Before You Buy
CLBO Crystal Things To Know Before You Buy
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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 fantastic nonlinear crystal which is often placed on the SHG within the NIR into the inexperienced. The DUV laser is often realized by two levels of SFG during the LBO crystals due to the fact there is absolutely no section-matching angle for LBO to convert the eco-friendly laser at 515 nm or 532 nm towards the DUV straight by SHG [16]. A short while ago, the NSBBF crystal has also proven its opportunity to get a superior conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff from the NSBBF are Pretty much similar to These of CLBO [17].
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The beam profile shown in Determine 7b demonstrated a fantastic beam excellent as among the deserves of Raman laser, which might be beneficial to crank out a 193-nm DUV laser with a high quality beam.
The conversion click here performance from basic NIR to DUV is from five% to 36% in accordance with the described leads to Desk 1. Increasing the conversion performance will lessen the burden on the look and setup of the basic laser amplifier plus the electric ability consumption. An excellent beam high-quality of the fundamental laser will likely add to the increasing in the conversion efficiency along with the suitable electric power depth with the NIR and inexperienced laser in the SHG and FHG method, respectively. The highest conversion efficiencies from NIR to eco-friendly and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [12], which corresponds towards the conversion efficiency of 35% from essential to DUV.
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