CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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The common electricity on the NIR laser even now has the potential to generally be enhanced to tens of watts for example 70 W [26] When the double-go configuration may be used for your Yb:YAG SCF amplifier phase. That's why, In case the conversion efficiency of 31% from NIR to DUV may very well be still preserved at this larger ability problem, the standard output energy on the DUV laser at 258 nm could be greater than 20 W, which might be a exceptional energy degree for that DUV laser and produce the unanticipated DUV laser machining outcomes. In addition, for high-electrical power DUV laser, the UV hurt in the nonlinear crystal, such as the windows for CLBO crystal along with the mirrors, is an additional significant parameter for long run and steady operation.
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Equally the 1040 nm and 1078 nm laser come from 1 twin-wavelength Yb-doped fiber laser. Each laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
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During the scientific and industrial purposes, the beam quality of the DUV laser is also an important parameter. Especially, the beam quality in the DUV laser drastically affects the laser machining success. The beam good quality from the DUV laser is decided by that of the fundamental laser as well as crystal to the frequency conversion. Recently, a significant-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < one.five, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would lead to an improved laser machining final result in comparison with the past DUV lasers with larger M2.
The pulse period of the second Stokes light-weight was shortened to 5 ns as shown in Determine 7a, just one-shot photo from your oscilloscope, which happens to be a typical phenomenon in Raman laser [forty four] whilst the heart beat duration of the pump laser was 10 ns.
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Tunable ultraviolet laser resource based on sound-state dye laser technologies and CsLiB6O10 harmonic generation
The conversion effectiveness from fundamental NIR to DUV is from five% to 36% based on the claimed ends in Desk 1. Expanding the conversion effectiveness will decrease the load on the design and set up of the fundamental laser amplifier and also the electric electric power intake. A very good beam excellent of the basic laser can even lead towards the raising of your conversion efficiency and also the appropriate power depth on the NIR and inexperienced laser while in the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and environmentally friendly to DUV laser by use of CLBO crystal are 70% and about 50%, respectively [twelve], which corresponds to your conversion efficiency of 35% from essential to DUV.
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