Far-infrared saturation spectroscopy of a single square well

K. Craig; C. L. Felix; J. N. Heyman; A. G. Markelz; M. S. Sherwin; K. L. Campman; P. F. Hopkins; A. C. Gossard

doi:10.1088/0268-1242/9/5S/061

Far-infrared saturation spectroscopy of a single square well

K. Craig
, C. L. Felix
, J. N. Heyman
, A. G. Markelz
, M. S. Sherwin
, K. L. Campman
, P. F. Hopkins
, A. C. Gossard

Physics

University of California at Santa Barbara

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

33 Scopus citations

Abstract

We have performed saturation spectroscopy measurements of the lowest intersubband transition in a single 400 AA GaAs/Al_0.3Ga _0.7As modulation-doped square quantum well. We couple intense tunable far-infrared radiation from the Santa Barbara free electron laser into our sample using an edge-coupling technique and measure absorption as a function of frequency and intensity. Saturation and frequency shifts in the absorption line are clearly observed. We attribute the frequency shifts to reductions in the many-body depolarization shift. From our preliminary measurements, we estimate the intersubband relaxation time to be 600 ps to within a factor of three.

Original language	English
Article number	061
Pages (from-to)	627-629
Number of pages	3
Journal	Semiconductor Science and Technology
Volume	9
Issue number	5 S
DOIs	https://doi.org/10.1088/0268-1242/9/5S/061
State	Published - 1994

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title = "Far-infrared saturation spectroscopy of a single square well",

abstract = "We have performed saturation spectroscopy measurements of the lowest intersubband transition in a single 400 AA GaAs/Al0.3Ga 0.7As modulation-doped square quantum well. We couple intense tunable far-infrared radiation from the Santa Barbara free electron laser into our sample using an edge-coupling technique and measure absorption as a function of frequency and intensity. Saturation and frequency shifts in the absorption line are clearly observed. We attribute the frequency shifts to reductions in the many-body depolarization shift. From our preliminary measurements, we estimate the intersubband relaxation time to be 600 ps to within a factor of three.",

author = "K. Craig and Felix, \{C. L.\} and Heyman, \{J. N.\} and Markelz, \{A. G.\} and Sherwin, \{M. S.\} and Campman, \{K. L.\} and Hopkins, \{P. F.\} and Gossard, \{A. C.\}",

year = "1994",

doi = "10.1088/0268-1242/9/5S/061",

language = "English",

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pages = "627--629",

journal = "Semiconductor Science and Technology",

issn = "0268-1242",

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TY - JOUR

T1 - Far-infrared saturation spectroscopy of a single square well

AU - Craig, K.

AU - Felix, C. L.

AU - Heyman, J. N.

AU - Markelz, A. G.

AU - Sherwin, M. S.

AU - Campman, K. L.

AU - Hopkins, P. F.

AU - Gossard, A. C.

PY - 1994

Y1 - 1994

N2 - We have performed saturation spectroscopy measurements of the lowest intersubband transition in a single 400 AA GaAs/Al0.3Ga 0.7As modulation-doped square quantum well. We couple intense tunable far-infrared radiation from the Santa Barbara free electron laser into our sample using an edge-coupling technique and measure absorption as a function of frequency and intensity. Saturation and frequency shifts in the absorption line are clearly observed. We attribute the frequency shifts to reductions in the many-body depolarization shift. From our preliminary measurements, we estimate the intersubband relaxation time to be 600 ps to within a factor of three.

AB - We have performed saturation spectroscopy measurements of the lowest intersubband transition in a single 400 AA GaAs/Al0.3Ga 0.7As modulation-doped square quantum well. We couple intense tunable far-infrared radiation from the Santa Barbara free electron laser into our sample using an edge-coupling technique and measure absorption as a function of frequency and intensity. Saturation and frequency shifts in the absorption line are clearly observed. We attribute the frequency shifts to reductions in the many-body depolarization shift. From our preliminary measurements, we estimate the intersubband relaxation time to be 600 ps to within a factor of three.

UR - https://www.scopus.com/pages/publications/0028426404

U2 - 10.1088/0268-1242/9/5S/061

DO - 10.1088/0268-1242/9/5S/061

M3 - Article

AN - SCOPUS:0028426404

SN - 0268-1242

VL - 9

SP - 627

EP - 629

JO - Semiconductor Science and Technology

JF - Semiconductor Science and Technology

IS - 5 S

M1 - 061

ER -

Far-infrared saturation spectroscopy of a single square well

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