Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy

Stephan Lutgen; Robert A. Kaindl; Michael Woerner; Thomas Elsaesser; Andreas Hase; Harald Künzel

doi:10.1103/PhysRevB.54.R17343

Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy

Stephan Lutgen, Robert A. Kaindl, Michael Woerner, Thomas Elsaesser, Andreas Hase, Harald Künzel

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

38 Scopus citations

Abstract

The transient ((Formula presented)) to ((Formula presented)) intersubband absorption of a pure electron plasma in (Formula presented)-type (Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determined by both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of ((Formula presented)) electrons, which are monitored in an independent experiment.

Original language	English (US)
Pages (from-to)	R17343-R17346
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	54
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.54.R17343
State	Published - 1996
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy",

abstract = "The transient ((Formula presented)) to ((Formula presented)) intersubband absorption of a pure electron plasma in (Formula presented)-type (Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determined by both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of ((Formula presented)) electrons, which are monitored in an independent experiment.",

author = "Stephan Lutgen and Kaindl, {Robert A.} and Michael Woerner and Thomas Elsaesser and Andreas Hase and Harald K{\"u}nzel",

year = "1996",

doi = "10.1103/PhysRevB.54.R17343",

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T1 - Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy

AU - Lutgen, Stephan

AU - Kaindl, Robert A.

AU - Woerner, Michael

AU - Elsaesser, Thomas

AU - Hase, Andreas

AU - Künzel, Harald

PY - 1996

Y1 - 1996

N2 - The transient ((Formula presented)) to ((Formula presented)) intersubband absorption of a pure electron plasma in (Formula presented)-type (Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determined by both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of ((Formula presented)) electrons, which are monitored in an independent experiment.

AB - The transient ((Formula presented)) to ((Formula presented)) intersubband absorption of a pure electron plasma in (Formula presented)-type (Formula presented)(Formula presented)As/(Formula presented)(Formula presented)As quantum wells is studied in femtosecond pump-probe experiments. The ultrafast dynamics of nonlinear absorption shows strong changes when tuning the midinfrared pulses over the intersubband absorption line. The nonlinear optical response is determined by both intersubband relaxation with a time constant of 1.3 ps and the intraband dynamics of ((Formula presented)) electrons, which are monitored in an independent experiment.

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Nonlinear intersubband absorption of a hot quasi-two-dimensional electron plasma studied by femtosecond infrared spectroscopy

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