5 Essential Elements For CLBO Crystal
5 Essential Elements For CLBO Crystal
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The normal electric power in the NIR laser however has the likely to become enhanced to tens of watts like 70 W [26] Should the double-move configuration may be utilized for that Yb:YAG SCF amplifier phase. Therefore, In the event the conversion effectiveness of 31% from NIR to DUV can be nonetheless taken care of at this larger electricity affliction, the standard output electric power from the DUV laser at 258 nm may be in excess of twenty W, which would be described as a extraordinary ability amount with the DUV laser and produce the unanticipated DUV laser machining effects. Furthermore, for top-electric power DUV laser, the UV hurt from the nonlinear crystal, such as the Home windows for CLBO crystal along with the mirrors, is another significant parameter for long-term and secure operation.
On the other hand, the beam excellent of the larger ability DUV laser would grow to be even worse because of additional serious thermal and nonlinear results. For this reason, the frequency conversion procedures should be cautiously intended to mitigate the aforementioned outcomes. As a result, a superior-energy DUV laser on the FHG of 1 μm with a fantastic beam high-quality could be obtained and will be advantageous for acquiring the shorter wavelength DUV lasers like 193 nm by SFG.
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While in the scientific and industrial apps, the beam excellent with the DUV laser is likewise a significant parameter. Notably, the beam good quality in the DUV laser significantly has an effect on the laser machining effects. The beam excellent on the DUV laser is determined by that of the elemental laser as well as the crystal with the frequency conversion. Not long ago, a significant-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam high quality of M2 < 1.5, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would produce an even better laser machining outcome as compared to the earlier DUV lasers with much larger M2.
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Also, combining the solid-state laser with other nonlinear course of action like stimulated Raman scattering, NIR lasers may very well be accomplished at new wavelengths with substantial electrical power and significant beam excellent, which was examined with the proof-of-principle experiment. This Raman laser scheme provides a whole new route to the high-electrical power DUV laser, especially with the wavelength of 193 nm.
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The conversion effectiveness from fundamental NIR to DUV is from five% to 36% based on the reported ends in Table one. Escalating the conversion performance will reduce the load on the look and setup of the basic laser amplifier in addition to the electric powered electrical power use. A great beam excellent of the fundamental laser will even lead to the escalating with the conversion performance as well as the appropriate electrical power intensity on the NIR and environmentally friendly laser during the SHG and FHG procedure, respectively. The highest conversion efficiencies from NIR to green and green to DUV laser by usage of CLBO crystal are 70% and all-around fifty%, respectively [twelve], which corresponds on the conversion efficiency of 35% from fundamental to DUV.
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