However, so that you can course of action the crystal is incredibly Sophisticated production techniques are expected. For the reason that dawn of this crystal, engaged on this challenge, we are actually the only real organization in the world which can be processed in this crystal.
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The typical electrical power from the NIR laser still has the opportunity to get improved to tens of watts including 70 W [26] if the double-go configuration might be utilized with the Yb:YAG SCF amplifier stage. Therefore, If your conversion efficiency of 31% from NIR to DUV may very well be nevertheless managed at this greater electric power condition, the normal output energy of your DUV laser at 258 nm may very well be more than twenty W, which would certainly be a exceptional power amount for the DUV laser and bring about the unanticipated DUV laser machining benefits. In addition, for prime-electrical power DUV laser, the UV hurt on the nonlinear crystal, including the windows for CLBO crystal as well as the mirrors, is another essential parameter for long-term and secure Procedure.
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As a result of thermal lens outcome inside the solid-point out lasers, In the event the heating management is inadequate, It's not easy to get the strong-point out laser that has a substantial electrical power as well as a superior beam top quality concurrently. Recently, with the development of the thin disk laser and solitary-crystal fiber (SCF) laser, a significant-energy laser at the basic wavelength (one μm) were understood with a good beam good quality Despite having a TEM00 manner beam [four,24], check here which might be good candidates for the elemental from the DUV laser generation. Yet another applicant for the basic would be the substantial-electricity fiber laser which could be attained by coherent beam mixture with M2 value less than one.
On the opposite aspect, the power scaling on the NIR laser is an additional element to increase the ordinary electricity in the 193-nm DUV laser. Because of the not enough the large-energy amplification Alternative on the NIR laser (for instance at 1553 nm), nonlinear frequency procedures like optical parameter oscillation (OPO) may very well be applied to establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and obtaining relative increased ability [21]. Not too long ago, a diamond Raman laser showed its ability in attaining a significant power along with a substantial conversion effectiveness for the 1st Stokes in the 1-μm laser [22,23], which suggests the likelihood for being utilized inside the 193-nm DUV laser generation as a result of its superior Raman acquire and large frequency change.
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What's more, combining the reliable-point out laser with other nonlinear procedure which include stimulated Raman scattering, NIR lasers could possibly be obtained at new wavelengths with higher electric power and significant beam quality, which was analyzed by the proof-of-principle experiment. This Raman laser scheme presents a whole new path to the high-electric power DUV laser, In particular on the wavelength of 193 nm.
Tunable ultraviolet laser resource based upon solid-state dye laser know-how and CsLiB6O10 harmonic era
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