In this particular paper, the new lapping slurry and sprucing slurry are introduced. Plus the deliquescence degree of CLBO is fallen to most affordable. A new Doing the job know-how is additionally adopted. Right after rough sharpening, the concentration of extremely-precision polishing slurry is greater thoroughly. So does the extremely-precision sharpening pace, along with the wiping velocity is quicker than the deliquescence velocity. The CLBO crystal surface roughness can attain 1nm and keep the surface area high quality nicely. Entry through your institution
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We summarized The existing development standing of the high-power DUV laser both equally at the wavelength of FHG in the 1-μm laser and at 193 nm. The new enhancement of your good-state/fiber laser, plus the nonlinear optical crystals, prompts don't just the common electric power but additionally the beam excellent (coherence) of the DUV lasers to an unprecedented amount.
For illustration, The existing concave OC could be replaced by a aircraft mirror which could mitigate the facility density over the surface of M1 as well as the diamond. Additionally, working with high injury threshold coatings for M1 and diamond would also Enhance the output electrical power without any damages. Then, the NIR laser at the 2nd Stokes wavelength can be higher enough, together with its very good beam high quality, to crank out the final DUV laser at 193 nm that has a substantial average electricity.
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From the scientific and industrial purposes, the beam good quality from the DUV laser can be a vital parameter. Particularly, the beam high-quality on the DUV laser significantly affects the laser machining results. The beam good quality on the DUV laser is set by that of the elemental laser and also the crystal to the frequency conversion. Just lately, a large-electric power DUV laser (>ten W) at 258 nm was claimed having a beam excellent of M2 < one.5, which was produced by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [13]. This laser would produce a far better laser machining consequence as compared to the previous DUV lasers with much larger M2.
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The beam profile shown in Figure 7b demonstrated a great beam good quality as on the list of deserves of Raman laser, which might be advantageous to deliver a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches 180 nm. The successful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as large as that of KDP. CLBO crystals is often developed with the stoichiometric melt with decrease viscosity.
The development of the 193-nm laser was shown by phases of SFG. In order to scale the DUV laser electricity effectively, a fresh strategy of the 193-nm DUV laser generation is offered depending on the diamond Raman laser.