The smart Trick of CLBO Crystal That Nobody is Discussing
The smart Trick of CLBO Crystal That Nobody is Discussing
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We summarized The existing improvement status from the substantial-power DUV laser the two on the wavelength of FHG on the 1-μm laser and at 193 nm. The new growth in the solid-state/fiber laser, along with the nonlinear optical crystals, prompts not merely the average electric power but additionally the beam high quality (coherence) on the DUV lasers to an unprecedented stage.
The important thing trouble of ultraviolet coherent mild supply predominantly focuses on the event of nonlinear optical frequency conversion crystal in ultraviolet band. The nonlinear optical crystal is amongst the ailments for frequency transformation, so the growth, dimension, problems resistance, conversion performance and allowable parameter selection of nonlinear optical crystal are essential Progressively more.
Alternatively, the beam good quality of this larger electricity DUV laser would come to be worse resulting from a lot more major thermal and nonlinear results. Therefore, the frequency conversion procedures really should be thoroughly built to mitigate the aforementioned consequences. So, a superior-electric power DUV laser for the FHG of 1 μm with a great beam quality can be received and can be advantageous for getting the shorter wavelength DUV lasers which include 193 nm by SFG.
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While in the scientific and industrial apps, the beam high-quality from the DUV laser is likewise a significant parameter. Significantly, the beam high-quality from the DUV laser considerably affects the laser machining benefits. The beam high-quality with the DUV laser is set by that of the basic laser along with the crystal to the frequency conversion. Not too long ago, a large-energy DUV laser (>ten W) at 258 nm was claimed by using a beam good quality of M2 < 1.five, which was created by FHG of a Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would cause an improved laser machining outcome in comparison with the prior DUV lasers with larger M2.
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The beam profile proven in Determine 7b demonstrated a good beam excellent as one of many deserves of Raman laser, which would be beneficial to crank out a 193-nm DUV laser with a high quality beam.
Its UV absorption edge reaches 180 nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as large as that of KDP. CLBO crystals could be developed within the stoichiometric here melt with reduce viscosity.
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