The Definitive Guide to CLBO Crystal
The Definitive Guide to CLBO Crystal
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In accordance with the proof-of-principle experiment, the conversion performance of 23% implied the potential for reaching higher-power at the next Stokes wavelength from the Raman laser. When the pump laser of 1078 nm may be received at the common electrical power of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm can be much more than ten W. The look from the Raman laser cavity need to be optimized in an effort to steer clear of the hurt of the M1 and diamond surface area.
The common electric power of your NIR laser continue to has the opportunity to get improved to tens of watts which include 70 W [26] In case the double-pass configuration may very well be utilized for the Yb:YAG SCF amplifier phase. Hence, Should the conversion effectiveness of 31% from NIR to DUV could be even now managed at this larger electricity affliction, the typical output ability on the DUV laser at 258 nm could be much more than 20 W, which would certainly be a exceptional electricity stage with the DUV laser and produce the unanticipated DUV laser machining effects. What's more, for top-ability DUV laser, the UV problems with the nonlinear crystal, such as 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 excellent of this larger electric power DUV laser would grow to be worse resulting from far more serious thermal and nonlinear results. That's why, the frequency conversion procedures should be very carefully intended to mitigate the aforementioned outcomes. As a result, a significant-electric power DUV laser within the FHG of 1 μm with a great beam excellent can be obtained and will be advantageous for obtaining the shorter wavelength DUV lasers like 193 nm by SFG.
LBO can also be a wonderful nonlinear crystal which is always placed on the SHG from your NIR into the eco-friendly. The DUV laser is frequently realized by two stages of SFG inside the LBO crystals considering the fact that there isn't any phase-matching angle for LBO to transform the environmentally friendly laser at 515 nm or 532 nm to the DUV straight by SHG [16]. Just lately, the NSBBF crystal has also demonstrated its likely to get a large conversion efficiency from 532 nm to 266 nm. The walk-off angle and deff of your NSBBF are Nearly much like All those of CLBO [17].
On the opposite facet, the power scaling of your NIR laser is another facet to get more info enhance the average electricity with the 193-nm DUV laser. Mainly because of the deficiency of the superior-energy amplification Answer in the NIR laser (by way of example at 1553 nm), nonlinear frequency processes like optical parameter oscillation (OPO) can be placed on establish a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength and also getting relative increased electric power [21]. Recently, a diamond Raman laser showed its ability in acquiring a superior electricity and also a large conversion performance in the 1st Stokes of the 1-μm laser [22,23], which implies the possibility for being used in the 193-nm DUV laser era due to its higher Raman acquire and large frequency change.
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Moreover, combining the solid-condition laser with other nonlinear method which include stimulated Raman scattering, NIR lasers might be reached at new wavelengths with superior power and large beam good quality, which was examined because of the evidence-of-theory experiment. This Raman laser scheme supplies a whole new route to the significant-ability DUV laser, In particular for the wavelength of 193 nm.
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The development with the 193-nm laser was shown by stages of SFG. In an effort to scale the DUV laser ability successfully, a whole new thought of the 193-nm DUV laser generation is presented determined by the diamond Raman laser.