Not known Details About CLBO Crystal
Not known Details About CLBO Crystal
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The standard energy on the NIR laser still has the potential to get enhanced to tens of watts like 70 W [26] Should the double-move configuration might be used for your Yb:YAG SCF amplifier phase. Consequently, if the conversion performance of 31% from NIR to DUV may very well be nevertheless taken care of at this bigger electrical power ailment, the typical output electric power from the DUV laser at 258 nm may be much more than 20 W, which might be described as a outstanding electric power amount for the DUV laser and result in the unanticipated DUV laser machining results. Furthermore, for high-energy DUV laser, the UV harm from the nonlinear crystal, such as the windows for CLBO crystal and also the mirrors, is an additional critical parameter for long run and steady operation.
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On one other facet, the ability scaling in the NIR laser is another part to raise the common ability of your 193-nm DUV laser. Due to insufficient the higher-ability amplification Resolution from the NIR laser (such as at 1553 nm), nonlinear frequency processes which include optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength together with obtaining relative bigger electrical power [21]. A short while ago, a diamond Raman laser showed its potential in acquiring a higher electricity in addition to a high conversion efficiency on the 1st Stokes on the one-μm laser [22,23], which means the chance to become applied within the 193-nm DUV laser generation as a result of its large Raman obtain and large frequency change.
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Moreover, combining the sound-condition laser with other nonlinear approach which include stimulated Raman scattering, NIR lasers might be reached at new wavelengths with significant ability and high beam high quality, which was tested from the proof-of-basic principle experiment. This Raman laser plan delivers a different path to the higher-electrical power DUV laser, Specifically on the wavelength of 193 nm.
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The conversion effectiveness from fundamental NIR to DUV is from five% to 36% according to the described leads to Desk 1. Raising the more info conversion efficiency will lessen the stress on the design and set up of the fundamental laser amplifier together with the electric electric power consumption. A very good beam top quality of the elemental laser will also contribute for the expanding from the conversion effectiveness together with the right power intensity from the NIR and eco-friendly laser while in the SHG and FHG course of action, respectively. The best conversion efficiencies from NIR to environmentally friendly and environmentally friendly to DUV laser by usage of CLBO crystal are 70% and all over fifty%, respectively [12], which corresponds for the conversion effectiveness of 35% from basic to DUV.
The event from the 193-nm laser was shown by stages of SFG. So as to scale the DUV laser electrical power correctly, a whole new thought in the 193-nm DUV laser technology is introduced depending on the diamond Raman laser.