The best Side of CLBO Crystal
The best Side of CLBO Crystal
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All-reliable-condition ultraviolet lasers are actually greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and drugs for some great benefits of small volume, extended existence, large efficiency, good beam quality, large tuning and slim spectral line, and so on. Making use of substantial electricity close to-infrared coherent light-weight supply as the fundamental frequency supply based upon nonlinear tuning engineering, generating ultraviolet coherent radiation by multistage frequency conversion is considered to be an essential solution to build the ultraviolet coherent light-weight source.
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Based on the evidence-of-principle experiment, the conversion efficiency of 23% implied the potential for achieving higher-electricity at the next Stokes wavelength with the Raman laser. Should the pump laser of 1078 nm could be obtained at the average energy of fifty W, the output power of its 2nd Stokes wavelength at 1512 nm may be in excess of ten W. The design of the Raman laser cavity should be optimized in order to steer clear of the problems with the M1 and diamond surface.
For example, The existing concave OC could be replaced by a airplane mirror which could mitigate the ability density to the floor of M1 as well as the diamond. Furthermore, using superior hurt threshold coatings for M1 and diamond would also improve the output electricity without any damages. Then, the NIR laser for the 2nd Stokes wavelength can be substantial sufficient, as well as its superior beam high-quality, to crank out the ultimate DUV laser at 193 nm having a substantial normal power.
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Both equally the 1040 nm and 1078 nm laser click here come from 1 dual-wavelength Yb-doped fiber laser. Every laser is amplified by stages of fiber amplifier and Yb-doped products amplifier, respectively.
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From the scientific and industrial apps, the beam high quality of the DUV laser is usually a significant parameter. Specifically, the beam quality with the DUV laser drastically has an effect on the laser machining final results. The beam high-quality in the DUV laser is set by that of the fundamental laser along with the crystal with the frequency conversion. Not too long ago, a superior-energy DUV laser (>10 W) at 258 nm was noted that has a beam quality of M2 < 1.5, which was generated by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would result in an improved laser machining consequence compared to the previous DUV lasers with greater M2.
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The beam profile revealed in Determine 7b demonstrated a superb beam high-quality as among the merits of Raman laser, which would be helpful to make a 193-nm DUV laser with a high quality beam.
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