CLBO Crystal Can Be Fun For Anyone
CLBO Crystal Can Be Fun For Anyone
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By way of example, The existing concave OC could be replaced by a plane mirror which could mitigate the ability density around the area of M1 plus the diamond. Moreover, applying substantial harm threshold coatings for M1 and diamond would also Increase the output electrical power with none damages. Then, the NIR laser on the 2nd Stokes wavelength could be large adequate, as well as its good beam good quality, to crank out the final DUV laser at 193 nm that has a higher normal energy.
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On one other facet, the facility scaling with the NIR laser is yet another component to increase the typical energy of the 193-nm DUV laser. Due to the deficiency of the higher-power amplification Resolution from the NIR laser (such as at 1553 nm), nonlinear frequency processes for example optical parameter oscillation (OPO) might be applied to build a wavelength converter by shifting the wavelength from one μm to the specified wavelength in addition to acquiring relative bigger electrical power [21]. Not long ago, a diamond Raman laser confirmed its capability in reaching a significant power plus a superior conversion effectiveness within the 1st Stokes with the one-μm laser [22,23], which suggests the likelihood to get used in the 193-nm DUV laser generation as a consequence of its significant Raman achieve and large frequency change.
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During the scientific and industrial purposes, the beam high-quality of your DUV laser is also an important parameter. Particularly, the beam quality of your DUV laser considerably influences the laser machining outcomes. The beam good quality on the DUV laser is determined by that of the elemental laser and also the crystal for your frequency conversion. Lately, a substantial-energy DUV laser (>ten W) at 258 nm was noted with a beam excellent of M2 < 1.5, which was created by FHG of the Yb:YAG laser at 1030 nm using the CLBO crystal [thirteen]. This laser would produce an improved laser machining final result when compared to the preceding DUV lasers with larger M2.
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Furthermore, combining the stable-state laser with other nonlinear approach which include stimulated Raman scattering, NIR lasers could possibly be achieved at new wavelengths with large electrical power here and high beam top quality, which was examined from the evidence-of-basic principle experiment. This Raman laser plan offers a whole new path to the high-electrical power DUV laser, In particular within the wavelength of 193 nm.
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Its UV absorption edge reaches a hundred and eighty nm. The helpful nonlinear optical coefficient of CLBO for frequency doubling at 1064nm is about two times as huge as that of KDP. CLBO crystals may be developed through the stoichiometric melt with decreased viscosity.
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