Observation of optically pumped intersubband emission from quantum wells

James W. Bales; K. Alexander McIntosh; T. C. L. Gerh Sollner; William T. Goodhue; Elliott R. Brown

doi:10.1117/12.20731

1 October 1990 Observation of optically pumped intersubband emission from quantum wells

James W. Bales, K. Alexander McIntosh, T. C. L. Gerh Sollner, William T. Goodhue, Elliott R. Brown

Proceedings Volume 1283, Quantum Well and Superlattice Physics III; (1990) https://doi.org/10.1117/12.20731
Event: Advances in Semiconductors and Superconductors: Physics Toward Devices Applications, 1990, San Diego, CA, United States

Abstract

We report the first observation of optically pumped spontaneous emission from intersubband transitions by electrons in an n-type GaAs/A1GaAs coupled-quantum-well structure. Electrons were pumped from the first to fourth conduction subbands with a CW CO2 laser operating at a photon energy of 133 meV. The transition from the fourth to the third subbands occurred at an energy of 17 meV and had a full width at half-maximum of 3 meV.

Citation Download Citation

James W. Bales, K. Alexander McIntosh, T. C. L. Gerh Sollner, William T. Goodhue, and Elliott R. Brown "Observation of optically pumped intersubband emission from quantum wells", Proc. SPIE 1283, Quantum Well and Superlattice Physics III, (1 October 1990); https://doi.org/10.1117/12.20731

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