CLBO Crystal Fundamentals Explained
CLBO Crystal Fundamentals Explained
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With this paper, the new lapping slurry and polishing slurry are launched. As well as the deliquescence diploma of CLBO is fallen to most affordable. A whole new Performing technology is likewise adopted. Just after tough polishing, the focus of ultra-precision polishing slurry is amplified adequately. So does the ultra-precision sprucing speed, plus the wiping speed is faster compared to deliquescence velocity. The CLBO crystal surface roughness can realize 1nm and maintain the floor high quality nicely. Entry by way of your institution
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We summarized The existing advancement status of your substantial-electrical power DUV laser both for the wavelength of FHG from the one-μm laser and at 193 nm. The latest enhancement in the stable-state/fiber laser, and also the nonlinear optical crystals, prompts not merely the standard energy and also the beam quality (coherence) in the DUV lasers to an unparalleled level.
As an illustration, the current concave OC could get replaced by a aircraft mirror which could mitigate the power density on the floor of M1 along with the diamond. In addition, utilizing high problems threshold coatings for M1 and diamond would also improve the output power with no damages. Then, the NIR laser in the 2nd Stokes wavelength can be substantial enough, and also its superior beam top quality, to check here deliver the final DUV laser at 193 nm by using a high common electric power.
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From the scientific and industrial apps, the beam high-quality of your DUV laser is usually a very important parameter. Specially, the beam excellent in the DUV laser significantly has an effect on the laser machining effects. The beam top quality of the DUV laser is set by that of the fundamental laser as well as crystal to the frequency conversion. Recently, a significant-electrical power DUV laser (>ten W) at 258 nm was noted that has a beam top 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 even better laser machining final result in comparison with the past DUV lasers with larger M2.
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The beam profile proven in Figure 7b demonstrated a superb beam high-quality as among the list of deserves of Raman laser, which might be effective to generate a 193-nm DUV laser with a top quality beam.
Its UV absorption edge reaches 180 nm. The effective nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about 2 times as massive as that of KDP. CLBO crystals could be developed within the stoichiometric melt with lower viscosity.
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