CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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All-reliable-condition ultraviolet lasers happen to be extensively Utilized in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of little volume, extended lifetime, superior performance, very good beam high quality, wide tuning and slender spectral line, and so forth. Making use of significant electricity close to-infrared coherent light-weight supply as the fundamental frequency resource according to nonlinear tuning technologies, building ultraviolet coherent radiation by multistage frequency conversion is considered to be a significant strategy to build the ultraviolet coherent light supply.
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The common power of the NIR laser still has the potential to generally be enhanced to tens of watts for example 70 W [26] In the event the double-pass configuration might be utilized for the Yb:YAG SCF amplifier stage. Therefore, Should the conversion efficiency of 31% from NIR to DUV may very well be nonetheless preserved at this higher electricity affliction, the average output ability with the DUV laser at 258 nm may be in excess of twenty W, which might be considered a amazing energy degree for that DUV laser and lead to the unanticipated DUV laser machining final results. Also, for top-electrical power DUV laser, the UV damage of the nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is an additional crucial parameter for long lasting and stable Procedure.
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Each the 1040 nm and 1078 nm laser come from 1 dual-wavelength Yb-doped fiber laser. Every laser is amplified by phases of fiber amplifier and Yb-doped elements amplifier, respectively.
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The heart beat length of the second Stokes mild was shortened to five ns as proven in Determine 7a, an individual-shot image with the oscilloscope, which can be a standard phenomenon in Raman laser [44] though the heartbeat period from the pump laser was ten ns.
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Tunable ultraviolet laser source determined by stable-point out dye laser technological know-how and CsLiB6O10 harmonic technology
The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the claimed ends in Desk 1. Increasing the conversion effectiveness will lessen the load on the look and setup of the basic laser amplifier as well as the electrical power intake. A good beam good quality of the elemental laser may also lead to your increasing in the conversion efficiency and also the appropriate electric power intensity of the NIR and inexperienced laser in the SHG and FHG course of action, respectively. The very best conversion efficiencies from NIR to eco-friendly and inexperienced to DUV laser by use of CLBO crystal are 70% and close to 50%, respectively [12], which corresponds to your conversion performance of 35% from elementary to DUV.
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