Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures

P. Murzyn; C. R. Pidgeon; J. P R Wells; I. V. Bradley; Z. Ikonic; R. W. Kelsall; P. Harrison; S. A. Lynch; D. J. Paul; D. D. Arnone; D. J. Robbins; D. Norris; A. G. Cullis

doi:10.1063/1.1452794

Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures

P. Murzyn, C. R. Pidgeon, J. P R Wells, I. V. Bradley, Z. Ikonic, R. W. Kelsall, P. Harrison, S. A. Lynch, D. J. Paul, D. D. Arnone, D. J. Robbins, D. Norris, A. G. Cullis

School of Engineering & Physical Sciences

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

44 Citations (Scopus)

Abstract

We report time-resolved (ps) studies of the dynamics of intersubband transitions in p-Si/SiGe multiquantum-well structures in the far-infrared (FIR) regime, ?<?_LO, utilizing the Dutch free electron laser, (entitled FELIX - free electron laser for infrared radiation). The calculated scattering rates for optic and acoustic phonon, and alloy scattering have been included in a rate equation model of the transient FIR intersubband absorption, and show excellent agreement with our degenerate pump-probe spectroscopy measurements where, after an initial rise time determined by the resolution of our measurement, we determine a decay time of ~10 ps. This is found to be approximately constant in the temperature range from 4 to 100 K, in good agreement with the predictions of alloy scattering in the Si _0.7Ge_0.3 wells. © 2002 American Institute of Physics.

Original language	English
Pages (from-to)	1456-1458
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	8
DOIs	https://doi.org/10.1063/1.1452794
Publication status	Published - 25 Feb 2002

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title = "Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures",

abstract = "We report time-resolved (ps) studies of the dynamics of intersubband transitions in p-Si/SiGe multiquantum-well structures in the far-infrared (FIR) regime, ?<?LO, utilizing the Dutch free electron laser, (entitled FELIX - free electron laser for infrared radiation). The calculated scattering rates for optic and acoustic phonon, and alloy scattering have been included in a rate equation model of the transient FIR intersubband absorption, and show excellent agreement with our degenerate pump-probe spectroscopy measurements where, after an initial rise time determined by the resolution of our measurement, we determine a decay time of ~10 ps. This is found to be approximately constant in the temperature range from 4 to 100 K, in good agreement with the predictions of alloy scattering in the Si 0.7Ge0.3 wells. {\textcopyright} 2002 American Institute of Physics.",

author = "P. Murzyn and Pidgeon, {C. R.} and Wells, {J. P R} and Bradley, {I. V.} and Z. Ikonic and Kelsall, {R. W.} and P. Harrison and Lynch, {S. A.} and Paul, {D. J.} and Arnone, {D. D.} and Robbins, {D. J.} and D. Norris and Cullis, {A. G.}",

year = "2002",

month = feb,

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doi = "10.1063/1.1452794",

language = "English",

volume = "80",

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journal = "Applied Physics Letters",

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T1 - Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures

AU - Murzyn, P.

AU - Pidgeon, C. R.

AU - Wells, J. P R

AU - Bradley, I. V.

AU - Ikonic, Z.

AU - Kelsall, R. W.

AU - Harrison, P.

AU - Lynch, S. A.

AU - Paul, D. J.

AU - Arnone, D. D.

AU - Robbins, D. J.

AU - Norris, D.

AU - Cullis, A. G.

PY - 2002/2/25

Y1 - 2002/2/25

N2 - We report time-resolved (ps) studies of the dynamics of intersubband transitions in p-Si/SiGe multiquantum-well structures in the far-infrared (FIR) regime, ?<?LO, utilizing the Dutch free electron laser, (entitled FELIX - free electron laser for infrared radiation). The calculated scattering rates for optic and acoustic phonon, and alloy scattering have been included in a rate equation model of the transient FIR intersubband absorption, and show excellent agreement with our degenerate pump-probe spectroscopy measurements where, after an initial rise time determined by the resolution of our measurement, we determine a decay time of ~10 ps. This is found to be approximately constant in the temperature range from 4 to 100 K, in good agreement with the predictions of alloy scattering in the Si 0.7Ge0.3 wells. © 2002 American Institute of Physics.

AB - We report time-resolved (ps) studies of the dynamics of intersubband transitions in p-Si/SiGe multiquantum-well structures in the far-infrared (FIR) regime, ?<?LO, utilizing the Dutch free electron laser, (entitled FELIX - free electron laser for infrared radiation). The calculated scattering rates for optic and acoustic phonon, and alloy scattering have been included in a rate equation model of the transient FIR intersubband absorption, and show excellent agreement with our degenerate pump-probe spectroscopy measurements where, after an initial rise time determined by the resolution of our measurement, we determine a decay time of ~10 ps. This is found to be approximately constant in the temperature range from 4 to 100 K, in good agreement with the predictions of alloy scattering in the Si 0.7Ge0.3 wells. © 2002 American Institute of Physics.

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DO - 10.1063/1.1452794

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VL - 80

SP - 1456

EP - 1458

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

ER -

Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures

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