The Ultimate Guide To CLBO Crystal
The Ultimate Guide To CLBO Crystal
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All-good-state ultraviolet lasers are widely Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for the advantages of compact volume, very long lifestyle, superior efficiency, great beam high quality, broad tuning and slender spectral line, etc. Making use of large electricity near-infrared coherent light supply as the elemental frequency supply depending on nonlinear tuning technological innovation, making ultraviolet coherent radiation by multistage frequency conversion is regarded as a significant approach to acquire the ultraviolet coherent mild resource.
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The common electrical power in the NIR laser continue to has the potential to be improved to tens of watts which include 70 W [26] If your double-pass configuration may be utilized for the Yb:YAG SCF amplifier stage. Therefore, Should the conversion effectiveness of 31% from NIR to DUV may very well be even now preserved at this greater electricity ailment, the average output energy of your DUV laser at 258 nm could be more than twenty W, which might become a impressive power degree for your DUV laser and bring on the unanticipated DUV laser machining benefits. Also, for prime-power DUV laser, the UV damage in the nonlinear crystal, including the windows for CLBO crystal and also the mirrors, is an additional crucial parameter for long-term and secure Procedure.
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LBO can also be an outstanding nonlinear crystal which is often applied to the SHG from your NIR into the green. The DUV laser is normally recognized by two stages of SFG inside the LBO crystals since there isn't a section-matching angle for LBO to convert the environmentally friendly laser at 515 nm or 532 nm to the DUV immediately by SHG [16]. Just lately, the NSBBF crystal has also demonstrated its opportunity to acquire a superior conversion performance from 532 nm to 266 nm. The walk-off angle and deff of your NSBBF are Pretty much comparable to those of CLBO [seventeen].
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In addition, combining the solid-condition laser with other nonlinear system including stimulated Raman scattering, NIR lasers could be reached at new wavelengths with large energy and CLBO Crystal substantial beam high-quality, which was analyzed from the proof-of-principle experiment. This Raman laser scheme delivers a completely new path to the superior-ability DUV laser, especially in the wavelength of 193 nm.
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The conversion performance from basic NIR to DUV is from five% to 36% based on the reported ends in Desk 1. Raising the conversion efficiency will decrease the stress on the design and setup of the basic laser amplifier along with the electric electricity use. A good beam top quality of the basic laser can even add into the increasing of your conversion efficiency in addition to the appropriate electrical power intensity from the NIR and green laser during the SHG and FHG process, respectively. The best conversion efficiencies from NIR to inexperienced and eco-friendly to DUV laser by use of CLBO crystal are 70% and around fifty%, respectively [12], which corresponds to the conversion performance of 35% from basic to DUV.
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