Rumored Buzz on CLBO Crystal

All-strong-condition ultraviolet lasers are actually widely used in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of tiny volume, extended daily life, large efficiency, good beam high-quality, huge tuning and narrow spectral line, etc. Employing substantial energy near-infrared coherent light-weight supply as the basic frequency source based on nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is viewed as an essential strategy to establish the ultraviolet coherent mild supply.

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The common energy in the NIR laser however has the opportunity for being improved to tens of watts including 70 W [26] In the event the double-move configuration might be utilized with the Yb:YAG SCF amplifier stage. For this reason, When the conversion efficiency of 31% from NIR to DUV could possibly be continue to maintained at this better energy issue, the normal output power from the DUV laser at 258 nm could possibly be a lot more than twenty W, which would be a extraordinary electrical power level for the DUV laser and lead to the unanticipated DUV laser machining success. Additionally, for high-ability DUV laser, the UV problems in the nonlinear crystal, such as the windows for CLBO crystal plus the mirrors, is another essential parameter for long run and stable Procedure.

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During the scientific and industrial purposes, the beam excellent of your DUV laser is likewise an essential parameter. Especially, the beam high quality of the DUV laser radically influences the laser machining final results. The beam quality from the DUV laser is set by that of the fundamental laser as well as crystal to the frequency conversion. Not too long ago, a high-electric power DUV laser (>10 W) at 258 nm was reported with a beam excellent of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would produce an even better laser machining final result in comparison with the past DUV lasers with larger M2.

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What's more, combining the stable-point out laser with other nonlinear course of action which include stimulated Raman scattering, NIR lasers could be realized at new wavelengths with superior power and substantial beam excellent, which was analyzed with the proof-of-principle experiment. This Raman laser scheme provides a fresh path to the high-energy DUV laser, Primarily within the wavelength of 193 nm.

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Its UV absorption edge reaches one hundred eighty nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals is usually grown from the stoichiometric soften with lower viscosity.

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