The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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Based on the evidence-of-basic principle experiment, the conversion performance of 23% implied the possibility of accomplishing large-energy at the 2nd Stokes wavelength with the Raman laser. Should the pump laser of 1078 nm may be obtained at the standard energy of 50 W, the output ability of its 2nd Stokes wavelength at 1512 nm may very well be in excess of 10 W. The design from the Raman laser cavity ought to be optimized so as to steer clear of the damage of your M1 and diamond surface area.
The normal power of your NIR laser nevertheless has the likely being enhanced to tens of watts which include 70 W [26] In case the double-pass configuration may be utilized to the Yb:YAG SCF amplifier phase. Consequently, if the conversion effectiveness of 31% from NIR to DUV may be however taken care of at this better ability problem, the common output electrical power of the DUV laser at 258 nm could possibly be a lot more than 20 W, which might be described as a extraordinary electricity level for that DUV laser and produce the unanticipated DUV laser machining results. In addition, for prime-electricity DUV laser, the UV hurt on the nonlinear crystal, such as the Home windows for CLBO crystal and the mirrors, is yet another important parameter for long-term and stable Procedure.
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Both of those the 1040 nm and 1078 nm laser come from just one twin-wavelength Yb-doped fiber laser. Each and every laser is amplified by phases of fiber amplifier and Yb-doped supplies amplifier, respectively.
On the opposite side, the facility scaling with the NIR laser is an additional element to increase the normal electricity from the 193-nm DUV laser. Due to the deficiency of the higher-electric power amplification Resolution of the NIR laser (one example is at 1553 nm), nonlinear frequency processes for instance optical parameter oscillation (OPO) could possibly be placed on create a wavelength converter by shifting the wavelength from 1 μm to the desired wavelength together with getting relative greater electricity [21]. Recently, a diamond Raman laser showed its ability in attaining a significant ability along with a large conversion effectiveness for the 1st Stokes of your one-μm laser [22,23], which means the chance to generally be used from the 193-nm DUV laser era as a consequence of its high Raman get and large frequency change.
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What's more, combining the reliable-point out laser with other nonlinear procedure for example stimulated Raman scattering, NIR lasers can be accomplished at new wavelengths with substantial ability and high beam top quality, which more info was examined with the evidence-of-theory experiment. This Raman laser scheme supplies a completely new path to the significant-ability DUV laser, especially in the wavelength of 193 nm.
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