@inproceedings{3c230f948b5d4088b70866fb17e86ece,
title = "Intersubband transitions in In0.07Ga0.93As/Al0.4Ga0.6As multiple quantum wells",
abstract = "Intersubband transitions in a series of well-doped ([Si] = 2.0×1018 cm-3) In0.07Ga0.93As/Al0.4Ga0.6As multiple quantum well samples were studied as a function of the well width by using the optical absorption technique. A single intersubband transition is observed in samples in which the Fermi energy level is between the ground and the first excited states in the quantum well. On the other hand, two intersubband transitions were recorded in samples where the Fermi energy level lies between the first and the second excited states. These two intersubband transitions were attributed to ground-to-first excited states and first-to-second excited states transitions. The energy separation between the latter two intersubband transitions was found to increase as the well width is increased. The fact that two intersubband transitions were observed in certain samples may suggest that specially designed quantum wells can be used for two color long wavelength infrared detectors.",
author = "F. Szmulowicz and Manasreh, {M. O.} and C. Kutsche and Stutz, {C. E.}",
year = "1994",
language = "English",
isbn = "1558991956",
series = "Materials Research Society Symposium Proceedings",
publisher = "Publ by Materials Research Society",
pages = "53--58",
editor = "Dawson, {Ralph L.} and Ami Appelbaum",
booktitle = "Infrared Detectors - Materials, Processing, and Devices",
note = "Proceedings of the 1993 Spring Meeting of the Materials Research Society ; Conference date: 14-04-1993 Through 16-04-1993",
}