The 2-Minute Rule for CLBO Crystal
The 2-Minute Rule for CLBO Crystal
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All-stable-condition ultraviolet lasers are actually greatly Employed in the fields of mechanical flaw detection, lithography, micromachining and medication for the benefits of tiny volume, extensive existence, large efficiency, superior beam high-quality, huge tuning and slim spectral line, etc. Employing large electricity in close proximity to-infrared coherent light-weight supply as the basic frequency source dependant on nonlinear tuning engineering, creating ultraviolet coherent radiation by multistage frequency conversion is thought to be an important approach to produce the ultraviolet coherent light-weight supply.
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We summarized the current improvement status of your substantial-electrical power DUV laser each within the wavelength of FHG in the one-μm laser and at 193 nm. The modern improvement of your solid-condition/fiber laser, as well as the nonlinear optical crystals, prompts not simply the average electric power but additionally the beam excellent (coherence) of the DUV lasers to an unprecedented degree.
As an example, The present concave OC could be replaced by a airplane mirror which could mitigate the ability density within the surface of M1 and the diamond. What's more, employing large damage threshold coatings for M1 and diamond would also Enhance the output energy with none damages. Then, the NIR laser on the 2nd Stokes wavelength could be superior ample, in addition to its fantastic beam top quality, to crank out the ultimate DUV laser at 193 nm with a large normal energy.
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While in the scientific and industrial apps, the beam good quality on the DUV laser can be a vital parameter. Specifically, the beam top quality of the DUV laser dramatically influences the laser machining final results. The beam high quality of your DUV laser is set by that of the fundamental laser plus the crystal to the frequency conversion. Recently, a substantial-electricity DUV laser (>10 W) at 258 nm was documented with a beam good quality of M2 < one.5, which was generated by FHG of a Yb:YAG laser at 1030 nm utilizing the CLBO crystal [thirteen]. This laser would result in an improved laser machining final result when compared with the former DUV lasers with larger M2.
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The beam profile proven in Figure 7b demonstrated a great beam good quality as among the merits of Raman laser, which might be valuable to crank out a 193-nm DUV laser with a top quality beam.
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