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3 March 2020 Reliable widely tunable electrically pumped 1050nm MEMS-VCSELs with amplifier in single butterfly co-package
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Abstract
We demonstrate the first 1050nm MEMS-eVCSEL co-packaged with a wideband amplifier to achieve over 70nm wavelength tuning at over 30mW of output power and SMSR greater than 40dB. Ophthalmic Optical Coherence Tomography Angiography (OCTA) images acquired at 800kHz A-scan rates showcase the telecom grade 14pin butterfly co-package as a path to low cost swept source OCT engines. Device design employs a strain-compensated InGaAs/GaAsP gain region disposed on a wideband fully oxidized GaAs/AlxOy back mirror capable of tuning ranges beyond 100nm. It has been suggested the wideband fully oxidized GaAs/AlxOy back mirror may pose risk to device lifetime reliability. However, over 9000hrs of lifetime testing validates reliability and projects device lifetimes exceed 20,000hrs under continuous use.
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Christopher Burgner, John Carter, Alan Donaldson, Nate Bramham, Benjamin Potsaid, Oscar Carrasco-Zevallos, Siyu Chen, Eric Moult, James G. Fujimoto, Peter Heim, Vijaysekhar Jayaraman, and Alex Cable "Reliable widely tunable electrically pumped 1050nm MEMS-VCSELs with amplifier in single butterfly co-package", Proc. SPIE 11228, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV, 1122809 (3 March 2020); https://doi.org/10.1117/12.2549050
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