19 November 2013 Improvements in the laser damage behavior of Ta2O5/SiO2 interference coatings by modification of the top layer design
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Abstract
We have investigated the properties and laser damage behavior of Ta2O5/SiO2 quarter wave stacks designed for λ=1 μm operation by substituting the Ta2O5 layer by either Y2O3 or HfO2 and the SiO2 by Al2O3 in the top 3 pairs of the multilayer stack. The high reflectors were deposited by dual ion beam sputtering. Laser damage at 1 μm using 350 ps showed enhanced performance when the Ta2O5/SiO2 stack had HfO2 or Y2O3 in its top few pairs.
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D. Patel, D. Patel, D. Schiltz, D. Schiltz, P. F. Langton, P. F. Langton, L. Emmert, L. Emmert, L. N. Acquaroli, L. N. Acquaroli, C. Baumgarten, C. Baumgarten, B. Reagan, B. Reagan, J. J. Rocca, J. J. Rocca, W. Rudolph, W. Rudolph, A. Markosyan, A. Markosyan, R. R. Route, R. R. Route, M. Fejer, M. Fejer, C. S. Menoni, C. S. Menoni, } "Improvements in the laser damage behavior of Ta2O5/SiO2 interference coatings by modification of the top layer design", Proc. SPIE 8885, Laser-Induced Damage in Optical Materials: 2013, 888522 (19 November 2013); doi: 10.1117/12.2030380; https://doi.org/10.1117/12.2030380
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