Compensation effects on optically pumped intersubband absorption in GaAs/AlxGa1-xAs multiple-quantum-well structures

W. J. Li; B. D. McCombe; F. A. Chambers; G. P. Devane; J. Ralston; G. Wicks

doi:10.1103/PhysRevB.42.11953

Compensation effects on optically pumped intersubband absorption in GaAs/AlxGa1-xAs multiple-quantum-well structures

W. J. Li
, B. D. McCombe
, F. A. Chambers
, G. P. Devane
, J. Ralston
, G. Wicks

Physics

SUNY Buffalo
BP plc
Cornell University

Research output: Contribution to journal › Article › peer-review

14 Scopus citations

Abstract

Measurements of intersubband transitions and cyclotron resonance (CR) have been carried out on lightly donor-doped GaAs/Al0.3Ga0.7As multiple-quantum-well structures. Absorption coefficients of CR and intersubband resonances combined with calculations of coupling efficiency given an oscillator strength of about 1. Measurements of CR absorption versus pump intensity show clear saturation at high intensities. Results demonstrate that the observed intersubband transitions are due to free electrons and that the large photogenerated excess free-electron density is due to compensation by acceptors.

Original language	English
Pages (from-to)	11953-11956
Number of pages	4
Journal	Physical Review B-Condensed Matter
Volume	42
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.42.11953
State	Published - 1990

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10.1103/PhysRevB.42.11953

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title = "Compensation effects on optically pumped intersubband absorption in GaAs/AlxGa1-xAs multiple-quantum-well structures",

abstract = "Measurements of intersubband transitions and cyclotron resonance (CR) have been carried out on lightly donor-doped GaAs/Al0.3Ga0.7As multiple-quantum-well structures. Absorption coefficients of CR and intersubband resonances combined with calculations of coupling efficiency given an oscillator strength of about 1. Measurements of CR absorption versus pump intensity show clear saturation at high intensities. Results demonstrate that the observed intersubband transitions are due to free electrons and that the large photogenerated excess free-electron density is due to compensation by acceptors.",

author = "Li, \{W. J.\} and McCombe, \{B. D.\} and Chambers, \{F. A.\} and Devane, \{G. P.\} and J. Ralston and G. Wicks",

year = "1990",

doi = "10.1103/PhysRevB.42.11953",

language = "English",

volume = "42",

pages = "11953--11956",

journal = "Physical Review B-Condensed Matter",

issn = "0163-1829",

publisher = "American Institute of Physics",

number = "18",

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TY - JOUR

T1 - Compensation effects on optically pumped intersubband absorption in GaAs/AlxGa1-xAs multiple-quantum-well structures

AU - Li, W. J.

AU - McCombe, B. D.

AU - Chambers, F. A.

AU - Devane, G. P.

AU - Ralston, J.

AU - Wicks, G.

PY - 1990

Y1 - 1990

N2 - Measurements of intersubband transitions and cyclotron resonance (CR) have been carried out on lightly donor-doped GaAs/Al0.3Ga0.7As multiple-quantum-well structures. Absorption coefficients of CR and intersubband resonances combined with calculations of coupling efficiency given an oscillator strength of about 1. Measurements of CR absorption versus pump intensity show clear saturation at high intensities. Results demonstrate that the observed intersubband transitions are due to free electrons and that the large photogenerated excess free-electron density is due to compensation by acceptors.

AB - Measurements of intersubband transitions and cyclotron resonance (CR) have been carried out on lightly donor-doped GaAs/Al0.3Ga0.7As multiple-quantum-well structures. Absorption coefficients of CR and intersubband resonances combined with calculations of coupling efficiency given an oscillator strength of about 1. Measurements of CR absorption versus pump intensity show clear saturation at high intensities. Results demonstrate that the observed intersubband transitions are due to free electrons and that the large photogenerated excess free-electron density is due to compensation by acceptors.

UR - https://www.scopus.com/pages/publications/0347018486

U2 - 10.1103/PhysRevB.42.11953

DO - 10.1103/PhysRevB.42.11953

M3 - Article

AN - SCOPUS:0347018486

SN - 0163-1829

VL - 42

SP - 11953

EP - 11956

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 18

ER -

Compensation effects on optically pumped intersubband absorption in GaAs/AlxGa1-xAs multiple-quantum-well structures

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