Nonetheless, to be able to process the crystal is rather Superior producing techniques are required. For the reason that dawn of this crystal, focusing on this challenge, we are actually the only real firm in the world which can be processed in this crystal.
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The typical electrical power from the NIR laser however has the likely for being enhanced to tens of watts which include 70 W [26] If your double-pass configuration can be utilized with the Yb:YAG SCF amplifier stage. As a result, If your conversion efficiency of 31% from NIR to DUV may be still taken care of at this greater energy affliction, the average output electrical power with the DUV laser at 258 nm could be over twenty W, which might certainly be a extraordinary power level for the DUV laser and result in the unanticipated DUV laser machining final results. Furthermore, for high-energy DUV laser, the UV harm from the nonlinear crystal, including the Home windows for CLBO crystal along with the mirrors, is an additional crucial parameter for long-lasting and steady Procedure.
On the other hand, the beam high-quality of this better energy DUV laser would turn into even worse because of far more major thermal and nonlinear effects. Consequently, the frequency conversion procedures really should be diligently made to mitigate the aforementioned consequences. Thus, a higher-electrical power DUV laser with the FHG of 1 μm with a superb beam good quality may be acquired and will be beneficial for getting the shorter wavelength DUV lasers for instance 193 nm by SFG.
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On the other facet, the ability scaling in the NIR laser is another component to boost the common energy with the 193-nm DUV laser. Due to lack of the superior-electricity amplification solution with the NIR laser (as an example at 1553 nm), nonlinear frequency procedures like optical parameter oscillation (OPO) may very well be applied to make a wavelength converter by shifting the wavelength from one μm to the specified wavelength as well as acquiring relative better energy [21]. Not long ago, a diamond Raman laser confirmed its ability in attaining a significant ability and a superior conversion performance at the 1st Stokes from the 1-μm laser [22,23], which implies the likelihood to get utilized while in the 193-nm DUV laser era on account of its substantial Raman achieve and huge frequency shift.
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Tunable ultraviolet laser source dependant on sound-point out dye laser technology and CsLiB6O10 harmonic era
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