CLBO Crystal Secrets
CLBO Crystal Secrets
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We summarized The existing progress status of your significant-electricity DUV laser each within the wavelength of FHG on the 1-μm laser and at 193 nm. The new growth of your sound-condition/fiber laser, plus the nonlinear optical crystals, prompts not only the common ability but will also the beam excellent (coherence) in the DUV lasers to an unprecedented degree.
The average electric power in the NIR laser still has the potential being enhanced to tens of watts for example 70 W [26] if the double-pass configuration may very well be used for the Yb:YAG SCF amplifier stage. Consequently, In case the conversion performance of 31% from NIR to DUV may be continue to managed at this better electric power affliction, the average output energy in the DUV laser at 258 nm may very well be much more than twenty W, which might certainly be a remarkable power amount for that DUV laser and cause the unanticipated DUV laser machining final results. Furthermore, for top-electricity DUV laser, the UV injury of the nonlinear crystal, such as the Home windows for CLBO crystal and also the mirrors, is yet another crucial parameter for long-term and secure Procedure.
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Inside the scientific and industrial programs, the beam top quality of the DUV laser is likewise a crucial parameter. Especially, the beam high-quality on the DUV laser significantly influences the laser machining outcomes. The beam high-quality from the DUV laser is set by that of the elemental laser as well as the crystal with the frequency conversion. Not too long ago, a significant-power DUV laser (>10 W) at 258 nm was noted with a beam good quality of M2 < one.5, which was produced by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would produce a greater laser machining end result compared to the prior DUV lasers with more substantial M2.
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Furthermore, combining the reliable-state laser with other nonlinear process for example stimulated Raman scattering, NIR lasers can be achieved at new wavelengths with higher electrical power and substantial beam good quality, which was examined with the proof-of-principle experiment. This Raman laser plan presents a completely new path to the large-electrical power DUV laser, Specifically in the wavelength of 193 nm.
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Its UV absorption edge reaches one hundred eighty nm. The efficient nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as huge as that of KDP. CLBO crystals can be developed from your stoichiometric soften with reduced viscosity.
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