CLBO Crystal Secrets
CLBO Crystal Secrets
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Nevertheless, to be able to procedure the crystal may be very Innovative manufacturing approaches are necessary. Since the dawn of this crystal, engaged on this problem, we at the moment are the sole organization on earth that could be processed With this crystal.
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We summarized The existing growth status of the superior-electric power DUV laser equally in the wavelength of FHG of your one-μm laser and at 193 nm. The latest enhancement in the solid-condition/fiber laser, as well as the nonlinear optical crystals, prompts not only the normal electrical power but will also the beam high quality (coherence) on the DUV lasers to an unprecedented stage.
The common electricity from the NIR laser nonetheless has the potential to be enhanced to tens of watts for example 70 W [26] When the double-pass configuration could be utilized for the Yb:YAG SCF amplifier stage. Hence, Should the conversion effectiveness of 31% from NIR to DUV might be however taken care of at this bigger electrical power affliction, the average output electricity of your DUV laser at 258 nm might be a lot more than twenty W, which would be considered a amazing power degree to the DUV laser and bring on the unanticipated DUV laser machining final results. Additionally, for prime-electricity DUV laser, the UV problems with the nonlinear crystal, such as the Home windows for CLBO crystal plus the mirrors, is yet another significant parameter for lasting and steady Procedure.
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LBO can be a wonderful nonlinear crystal which is always applied to the SHG with the NIR towards the inexperienced. The DUV laser is usually realized by two stages of SFG while in the LBO crystals considering the fact that there isn't any stage-matching angle for LBO to convert the inexperienced laser at 515 nm or 532 nm for the DUV straight by SHG [16]. Not too long ago, the NSBBF crystal has also proven its likely website to get a large conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff of your NSBBF are Pretty much just like People of CLBO [17].
On one other aspect, the ability scaling of the NIR laser is another component to improve the regular electrical power of the 193-nm DUV laser. Due to the deficiency of the large-power amplification Option from the NIR laser (such as at 1553 nm), nonlinear frequency processes such as optical parameter oscillation (OPO) could possibly be applied to build a wavelength converter by shifting the wavelength from 1 μm to the specified wavelength as well as acquiring relative better energy [21]. Not long ago, a diamond Raman laser confirmed its capability in obtaining a significant power as well as a substantial conversion performance with the 1st Stokes with the one-μm laser [22,23], which means the chance to generally be used during the 193-nm DUV laser technology because of its high Raman gain and enormous frequency change.
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Also, combining the good-state laser with other nonlinear approach for example stimulated Raman scattering, NIR lasers could be accomplished at new wavelengths with substantial power and higher beam good quality, which was examined with the proof-of-principle experiment. This Raman laser scheme provides a brand new route to the high-power DUV laser, especially within the wavelength of 193 nm.
Tunable ultraviolet laser source depending on sound-state dye laser know-how and CsLiB6O10 harmonic technology
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