The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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On the other hand, as a way to procedure the crystal may be very State-of-the-art manufacturing techniques are needed. For the reason that dawn of the crystal, engaged on this problem, we are now the sole enterprise on this planet that could be processed On this crystal.
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We summarized The present advancement status with the substantial-electrical power DUV laser each for the wavelength of FHG from the one-μm laser and at 193 nm. The current progress of the solid-condition/fiber laser, as well as the nonlinear optical crystals, prompts not merely the standard electrical power and also the beam quality (coherence) in the DUV lasers to an unparalleled amount.
The standard electric power on the NIR laser nevertheless has the potential to generally be improved to tens of watts such as 70 W [26] Should the double-move configuration could be used for your Yb:YAG SCF amplifier phase. Therefore, If your conversion efficiency of 31% from NIR to DUV may very well be continue to taken care of at this bigger electric power problem, the normal output ability on the DUV laser at 258 nm could be over 20 W, which might be described as a extraordinary energy degree with the DUV laser and lead to the unanticipated DUV laser machining final results. Additionally, for high-ability DUV laser, the UV destruction with the nonlinear crystal, including the windows for CLBO crystal and the mirrors, is an additional vital parameter for long run and stable operation.
On the flip side, the beam high-quality of the higher energy DUV laser would grow to be worse as a result of more severe thermal and nonlinear effects. Consequently, the frequency conversion processes needs to be very carefully created to mitigate the aforementioned effects. Thus, a superior-electric power DUV laser with the FHG of 1 μm with a good beam top quality could be attained and may be helpful for getting the shorter wavelength DUV lasers for example 193 nm by SFG.
The two the 1040 nm and 1078 nm laser come from a person twin-wavelength Yb-doped fiber laser. Every single laser is amplified by levels of fiber amplifier and Yb-doped resources amplifier, respectively.
On the other facet, the ability scaling on the NIR laser is another aspect to enhance the ordinary electric power in the 193-nm DUV laser. Because of the not enough the substantial-power amplification Option from the NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could possibly be placed on build a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength and acquiring relative bigger energy [21]. Not long ago, a diamond Raman laser confirmed its ability in attaining a substantial ability in addition to a significant conversion efficiency within the 1st Stokes of your 1-μm laser [22,23], which suggests the chance being utilized during the 193-nm DUV laser generation as a result of its high Raman acquire and enormous frequency change.
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Moreover, combining the good-point out laser with other nonlinear method which include stimulated Raman scattering, NIR lasers might be reached at new wavelengths with superior energy and large beam excellent, which was analyzed by the evidence-of-basic principle experiment. This Raman laser plan provides a brand new route to the high-energy DUV laser, Specifically with the wavelength of 193 nm.
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