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Single-mode, continuous-wave, electrically-injected, GaSb based, 2.1 mum, equilateral-triangle-resonator lasers with a wavelength tuning range of 3.25 nm are demonstrated at 77 K.
In spite of the almost ideal variation of the radiative current of 1.3 mum GaAsSb/GaAs-based lasers, the threshold current, Jth, is high due to non-radiative recombination accounting for 90% Jth near room temperature. This also gives rise to low T0 values ~60 K close to room temperature, similar to that for InGaAsP/InP
Room-temperature continuous wave operation of antimonide-based long wavelength VCSELs is reported. Power outputs up to 200 muW and wavelengths up to 1290 nm are achieved, making them suitable for optical data-communications applications
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