Abstract
Narrow-stripe transverse injection lasers in HgCdTe have been successfully fabricated and operated. The double heterostructure of the laser was grown by molecular beam epitaxy on a {111} CdZnTe substrate. The n type base was extrinsically indium doped but other p type layers were only doped by deviation from stoichiometry. Laser emission at 3.4 μm and 3.56 μm was obtained at 78K under pulsed current conditions. Threshold current density as low as 90 A/cm2 at 40K was achieved. Over 65K, the threshold current variation with temperature showed a sharp increase due to a drift-current leakage in the structure.
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Bouchut, P., Destefanis, G., Million, A. et al. Low threshold injection laser in HgCdTe. J. Electron. Mater. 22, 1061–1065 (1993). https://doi.org/10.1007/BF02817525
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DOI: https://doi.org/10.1007/BF02817525