Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells

S. R. Ryu; G. Herold; J. Kono; M. Salib; B. D. Mccombe; J. Kaminski; S. J. Allen

doi:10.1006/spmi.1996.0189

Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells

S. R. Ryu
, G. Herold
, J. Kono
, M. Salib
, B. D. Mccombe
, J. Kaminski
, S. J. Allen

Physics

University at Buffalo

SUNY Buffalo

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

2 Scopus citations

Abstract

Saturation of the D° 1s-2p⁺ transition, the D^--singlet transition and CR has been studied in donor (Si)-doped GaAs/AlGaAs multiple-quantum-well samples by magneto-transmission and magneto-photoconductivity measurements with the UCSB free electron laser. Effective lifetimes of the D° 1s-2p⁺transition were found to vary systematically with laser frequency, decreasing from 62 ns at 84 cm^-1 to 3 ns at 124 cm^-1. The absorption coefficient of the D^--singlet transition initially increased by up to 40% and showed complete quenching at higher laser powers.

Original language	English
Pages (from-to)	241-246
Number of pages	6
Journal	Superlattices and Microstructures
Volume	21
Issue number	2
DOIs	https://doi.org/10.1006/spmi.1996.0189
State	Published - Mar 1997

Keywords

Donor impurities
Free electron laser
GaAs/AlGa quantum wells
Saturation spectroscopy

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10.1006/spmi.1996.0189

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title = "Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells",

abstract = "Saturation of the D° 1s-2p+ transition, the D--singlet transition and CR has been studied in donor (Si)-doped GaAs/AlGaAs multiple-quantum-well samples by magneto-transmission and magneto-photoconductivity measurements with the UCSB free electron laser. Effective lifetimes of the D° 1s-2p+transition were found to vary systematically with laser frequency, decreasing from 62 ns at 84 cm-1 to 3 ns at 124 cm-1. The absorption coefficient of the D--singlet transition initially increased by up to 40\% and showed complete quenching at higher laser powers.",

keywords = "Donor impurities, Free electron laser, GaAs/AlGa quantum wells, Saturation spectroscopy",

author = "Ryu, \{S. R.\} and G. Herold and J. Kono and M. Salib and Mccombe, \{B. D.\} and J. Kaminski and Allen, \{S. J.\}",

year = "1997",

month = mar,

doi = "10.1006/spmi.1996.0189",

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journal = "Superlattices and Microstructures",

issn = "0749-6036",

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TY - JOUR

T1 - Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells

AU - Ryu, S. R.

AU - Herold, G.

AU - Kono, J.

AU - Salib, M.

AU - Mccombe, B. D.

AU - Kaminski, J.

AU - Allen, S. J.

PY - 1997/3

Y1 - 1997/3

N2 - Saturation of the D° 1s-2p+ transition, the D--singlet transition and CR has been studied in donor (Si)-doped GaAs/AlGaAs multiple-quantum-well samples by magneto-transmission and magneto-photoconductivity measurements with the UCSB free electron laser. Effective lifetimes of the D° 1s-2p+transition were found to vary systematically with laser frequency, decreasing from 62 ns at 84 cm-1 to 3 ns at 124 cm-1. The absorption coefficient of the D--singlet transition initially increased by up to 40% and showed complete quenching at higher laser powers.

AB - Saturation of the D° 1s-2p+ transition, the D--singlet transition and CR has been studied in donor (Si)-doped GaAs/AlGaAs multiple-quantum-well samples by magneto-transmission and magneto-photoconductivity measurements with the UCSB free electron laser. Effective lifetimes of the D° 1s-2p+transition were found to vary systematically with laser frequency, decreasing from 62 ns at 84 cm-1 to 3 ns at 124 cm-1. The absorption coefficient of the D--singlet transition initially increased by up to 40% and showed complete quenching at higher laser powers.

KW - Donor impurities

KW - Free electron laser

KW - GaAs/AlGa quantum wells

KW - Saturation spectroscopy

UR - https://www.scopus.com/pages/publications/0030683758

U2 - 10.1006/spmi.1996.0189

DO - 10.1006/spmi.1996.0189

M3 - Article

SN - 0749-6036

VL - 21

SP - 241

EP - 246

JO - Superlattices and Microstructures

JF - Superlattices and Microstructures

IS - 2

ER -

Free electron laser saturation spectroscopy of neutral donors and negative donor ions confined in GaAs/AlGaAs quantum wells

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Keywords

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