Abstract
As a promising new class of near-infrared light emitters, GaAsBi laser diodes (LDs) are considered to have a high energy efficiency and an insensitive temperature dependence of the band gap. In this paper, we realize the longest ever reported lasing wavelength up to 1.142 mu m at room temperature in GaAsBi0.058/GaAs quantum well LDs grown by molecular beam epitaxy. The output power is up to 127 mW at 300 K under pulsed mode. We also demonstrate continuous wave mode operation up to 273 K for the first time. The temperature coefficient of the GaAsBi/GaAs LD is 0.26 nm/K in the temperature range of 77-350 K, lower than that of both InGaAsP/InP and InGaAs/GaAs LDs. The characteristic temperature is extracted to be 139 K in the temperature range of 77-225 K and decreases to 79 K at 225-350 K.
Original language | English |
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Journal | A C S Photonics |
Volume | 4 |
Issue number | 6 |
Pages (from-to) | 1322-1326 |
ISSN | 2330-4022 |
DOIs | |
Publication status | Published - 2017 |
Keywords
- GaAsBi
- Molecular beam epitaxy
- Laser diodes
- Quantum well
- Uncooled laser