5 Simple Statements About CLBO Crystal Explained
5 Simple Statements About CLBO Crystal Explained
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We summarized The present growth status of your substantial-energy DUV laser the two on the wavelength of FHG of the 1-μm laser and at 193 nm. The the latest advancement with the sound-condition/fiber laser, in addition to the nonlinear optical crystals, prompts not only the normal energy but will also the beam good quality (coherence) from the DUV lasers to an unprecedented stage.
For illustration, The present concave OC could get replaced by a plane mirror which could mitigate the ability density within the area of M1 along with the diamond. What's more, employing higher harm threshold coatings for M1 and diamond would also Increase the output energy with no damages. Then, the NIR laser within the 2nd Stokes wavelength might be substantial plenty of, and its good beam high quality, to generate the final DUV laser at 193 nm having a significant normal electric power.
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LBO is usually a superb nonlinear crystal which is usually placed on the SHG through the NIR to the eco-friendly. The DUV laser is frequently recognized by two stages of SFG from the LBO crystals because there isn't a section-matching angle for LBO to transform the green laser at 515 nm or 532 nm for the DUV right by SHG [16]. Not too long ago, the NSBBF crystal has also proven its prospective to obtain a large conversion performance from 532 nm to 266 nm. The stroll-off angle and deff on the NSBBF are Virtually much like those of CLBO [seventeen].
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Inside the scientific and industrial programs, the beam high quality from the DUV laser can also be an essential parameter. Especially, the beam quality on the DUV laser substantially impacts the laser machining final results. The beam excellent on the DUV laser is determined by that of the elemental laser along with the crystal for your frequency conversion. Lately, a superior-electric power DUV laser (>10 W) at 258 nm was claimed by using a beam high quality of M2 < one.five, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in an even better laser machining result in comparison to the preceding DUV lasers with larger sized M2.
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Also, combining the strong-condition laser with other nonlinear procedure for instance stimulated Raman scattering, NIR lasers could be reached at new wavelengths with superior electricity and significant beam high quality, which was examined from the proof-of-theory experiment. This Raman laser plan delivers a new route to the higher-electricity DUV laser, In particular within the wavelength of 193 nm.
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The event on the 193-nm laser was shown by phases of SFG. As a way to scale the DUV laser electricity correctly, a fresh concept on the 193-nm DUV laser era is presented determined by the diamond Raman laser.