10 March 2016 Hybrid metal-semiconductor mirror for high power VECSEL
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Abstract
We demonstrate a low thermal impedance hybrid mirror VECSEL. We used only 14 pairs of AlGaAs/AlAs, transparent at the pump wavelength, and we used a patterned mask to deposit pure gold on areas of the chip to be pumped, and Ti/Au on other area to circumvent the poor adhesion of gold on GaAs. A higher gain is observed on an area metallized with pure gold and an output power of 4W was obtained, showing the effectiveness of the metallic mirror and validating the bonding quality. Chip processing and laser characteristics are studied in detail and compared to simulations.
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Alexandre Laurain, Kokou Gbele, Jorg Hader, Wolfgang Stolz, Stephan Koch, Antje Ruiz Perez, Jerome V. Moloney, "Hybrid metal-semiconductor mirror for high power VECSEL", Proc. SPIE 9734, Vertical External Cavity Surface Emitting Lasers (VECSELs) VI, 973415 (10 March 2016); doi: 10.1117/12.2212937; https://doi.org/10.1117/12.2212937
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