Optical absorption and photoresponse in fully quaternary p-type quantum well detectors

James R. Hoff; Christopher Louis Jelen; Steven Slivken; Gail J. Brown; Manijeh Razeghi

doi:10.1117/12.237713

12 April 1996 Optical absorption and photoresponse in fully quaternary p-type quantum well detectors

James R. Hoff, Christopher Louis Jelen, Steven Slivken, Gail J. Brown, Manijeh Razeghi

Proceedings Volume 2685, Photodetectors: Materials and Devices; (1996) https://doi.org/10.1117/12.237713
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

Acceptor doped, non-strained aluminum-free Quantum Well Intersubband Photodetectors lattice matched to GaAs with Ga_0.79In_0.21As_0.59P_0.41 wells and Ga_0.62In_0.38As_0.22P_0.78 barriers have been demonstrated on semi-insulating GaAs substrates. These devices which operate at normal incidence demonstrate a unique spectral response which extends from approximately 2 micrometers up to 10 micrometers . To explain such a broad spectral shape, a detailed theoretical analysis based on the 8 X 8 Kane Hamiltonian was necessary to probe all aspect of optical absorption. The results of this analysis revealed that spectral shape results from the influence of the Spin Split-off band on the band structure and the optical matrix.

Citation Download Citation

James R. Hoff, Christopher Louis Jelen, Steven Slivken, Gail J. Brown, and Manijeh Razeghi "Optical absorption and photoresponse in fully quaternary p-type quantum well detectors", Proc. SPIE 2685, Photodetectors: Materials and Devices, (12 April 1996); https://doi.org/10.1117/12.237713

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