A theoretical study of quantum well terahertz lasers

K. Donovan; P. Harrison; R. W. Kelsall; P. Kinsler

doi:10.1109/THZ.1998.731737

A theoretical study of quantum well terahertz lasers

K. Donovan, P. Harrison, R. W. Kelsall, P. Kinsler

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

A theoretical study is made of a GaAs/AlGaAs triple quantum well structure with the aim of developing a three level laser to emit in the terahertz region of the spectrum. The population inversion necessary for laser emission to take place is estimated by calculating the net nonradiative transition rates. It is found that the most effective way of achieving a population inversion is by depopulation to a strongly coupled state. The population inversion can be increased further by decreasing the barrier width between the quantum wells associated with the two lowest energy levels.

Original language	English
Title of host publication	1998 IEEE 6th International Conference on Terahertz Electronics, THz 1998 - Proceedings
Editors	P. Harrison
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	223-226
Number of pages	4
ISBN (Electronic)	0780349040
ISBN (Print)	9780780349032, 0780349032
DOIs	https://doi.org/10.1109/THZ.1998.731737
Publication status	Published - 6 Aug 2002
Externally published	Yes
Event	1998 IEEE 6th International Conference on Terahertz Electronics - Leeds, United Kingdom Duration: 3 Sep 1998 → 4 Sep 1998 Conference number: 6

Conference

Conference	1998 IEEE 6th International Conference on Terahertz Electronics
Abbreviated title	THz 1998
Country/Territory	United Kingdom
City	Leeds
Period	3/09/98 → 4/09/98

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10.1109/THZ.1998.731737Licence: Unspecified

Cite this

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title = "A theoretical study of quantum well terahertz lasers",

abstract = "A theoretical study is made of a GaAs/AlGaAs triple quantum well structure with the aim of developing a three level laser to emit in the terahertz region of the spectrum. The population inversion necessary for laser emission to take place is estimated by calculating the net nonradiative transition rates. It is found that the most effective way of achieving a population inversion is by depopulation to a strongly coupled state. The population inversion can be increased further by decreasing the barrier width between the quantum wells associated with the two lowest energy levels.",

keywords = "Laser, Population inversion, Quantum well, Subband, Terahertz",

author = "K. Donovan and P. Harrison and Kelsall, {R. W.} and P. Kinsler",

note = "Publisher Copyright: {\textcopyright} 1996 IEEE.; 1998 IEEE 6th International Conference on Terahertz Electronics, THz 1998 ; Conference date: 03-09-1998 Through 04-09-1998",

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Donovan, K, Harrison, P, Kelsall, RW & Kinsler, P 2002, A theoretical study of quantum well terahertz lasers. in P Harrison (ed.), 1998 IEEE 6th International Conference on Terahertz Electronics, THz 1998 - Proceedings., 731737, Institute of Electrical and Electronics Engineers Inc., pp. 223-226, 1998 IEEE 6th International Conference on Terahertz Electronics, Leeds, United Kingdom, 3/09/98. https://doi.org/10.1109/THZ.1998.731737

A theoretical study of quantum well terahertz lasers. / Donovan, K.; Harrison, P.; Kelsall, R. W. et al.

1998 IEEE 6th International Conference on Terahertz Electronics, THz 1998 - Proceedings. ed. / P. Harrison. Institute of Electrical and Electronics Engineers Inc., 2002. p. 223-226 731737.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - A theoretical study of quantum well terahertz lasers

AU - Donovan, K.

AU - Harrison, P.

AU - Kelsall, R. W.

AU - Kinsler, P.

N1 - Conference code: 6

PY - 2002/8/6

Y1 - 2002/8/6

N2 - A theoretical study is made of a GaAs/AlGaAs triple quantum well structure with the aim of developing a three level laser to emit in the terahertz region of the spectrum. The population inversion necessary for laser emission to take place is estimated by calculating the net nonradiative transition rates. It is found that the most effective way of achieving a population inversion is by depopulation to a strongly coupled state. The population inversion can be increased further by decreasing the barrier width between the quantum wells associated with the two lowest energy levels.

AB - A theoretical study is made of a GaAs/AlGaAs triple quantum well structure with the aim of developing a three level laser to emit in the terahertz region of the spectrum. The population inversion necessary for laser emission to take place is estimated by calculating the net nonradiative transition rates. It is found that the most effective way of achieving a population inversion is by depopulation to a strongly coupled state. The population inversion can be increased further by decreasing the barrier width between the quantum wells associated with the two lowest energy levels.

KW - Laser

KW - Population inversion

KW - Quantum well

KW - Subband

KW - Terahertz

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M3 - Conference contribution

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SN - 0780349032

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BT - 1998 IEEE 6th International Conference on Terahertz Electronics, THz 1998 - Proceedings

A2 - Harrison, P.

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 1998 IEEE 6th International Conference on Terahertz Electronics

Y2 - 3 September 1998 through 4 September 1998

ER -

A theoretical study of quantum well terahertz lasers

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