Nonequilibrium optical phonon generation by steady-state electron transport in quantum-cascade lasers

Vincenzo Spagnolo; Gaetano Scamarcio; Mariano Troccoli; Federico Capasso; Claire Gmachl; A. Michael Sergent; Albert L. Hutchinson; Deborah L. Sivco; Alfred Y. Cho

doi:10.1063/1.1481186

Nonequilibrium optical phonon generation by steady-state electron transport in quantum-cascade lasers

Vincenzo Spagnolo
, Gaetano Scamarcio
, Mariano Troccoli
, Federico Capasso
, Claire Gmachl
, A. Michael Sergent
, Albert L. Hutchinson
, Deborah L. Sivco
, Alfred Y. Cho

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

26 Scopus citations

Abstract

Observation of the nonequilibrium optical phonons population associated with electron transport in quantum-cascade lasers is reported. The phonon occupation number was measured in the range 75-280 K by using a combination of microprobe photoluminescence and Stokes/anti-Stokes Raman spectroscopy. The excess phonon population is observed to decrease as the lattice temperature increases. From the nonequilibrium phonon population, we extracted interface phonon lifetimes of 5 ps at 75 K and 2 ps at 280 K.

Original language	English (US)
Pages (from-to)	4303-4305
Number of pages	3
Journal	Applied Physics Letters
Volume	80
Issue number	23
DOIs	https://doi.org/10.1063/1.1481186
State	Published - Jun 10 2002
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1481186

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title = "Nonequilibrium optical phonon generation by steady-state electron transport in quantum-cascade lasers",

abstract = "Observation of the nonequilibrium optical phonons population associated with electron transport in quantum-cascade lasers is reported. The phonon occupation number was measured in the range 75-280 K by using a combination of microprobe photoluminescence and Stokes/anti-Stokes Raman spectroscopy. The excess phonon population is observed to decrease as the lattice temperature increases. From the nonequilibrium phonon population, we extracted interface phonon lifetimes of 5 ps at 75 K and 2 ps at 280 K.",

author = "Vincenzo Spagnolo and Gaetano Scamarcio and Mariano Troccoli and Federico Capasso and Claire Gmachl and Sergent, \{A. Michael\} and Hutchinson, \{Albert L.\} and Sivco, \{Deborah L.\} and Cho, \{Alfred Y.\}",

year = "2002",

month = jun,

day = "10",

doi = "10.1063/1.1481186",

language = "English (US)",

volume = "80",

pages = "4303--4305",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Nonequilibrium optical phonon generation by steady-state electron transport in quantum-cascade lasers

AU - Spagnolo, Vincenzo

AU - Scamarcio, Gaetano

AU - Troccoli, Mariano

AU - Capasso, Federico

AU - Gmachl, Claire

AU - Sergent, A. Michael

AU - Hutchinson, Albert L.

AU - Sivco, Deborah L.

AU - Cho, Alfred Y.

PY - 2002/6/10

Y1 - 2002/6/10

N2 - Observation of the nonequilibrium optical phonons population associated with electron transport in quantum-cascade lasers is reported. The phonon occupation number was measured in the range 75-280 K by using a combination of microprobe photoluminescence and Stokes/anti-Stokes Raman spectroscopy. The excess phonon population is observed to decrease as the lattice temperature increases. From the nonequilibrium phonon population, we extracted interface phonon lifetimes of 5 ps at 75 K and 2 ps at 280 K.

AB - Observation of the nonequilibrium optical phonons population associated with electron transport in quantum-cascade lasers is reported. The phonon occupation number was measured in the range 75-280 K by using a combination of microprobe photoluminescence and Stokes/anti-Stokes Raman spectroscopy. The excess phonon population is observed to decrease as the lattice temperature increases. From the nonequilibrium phonon population, we extracted interface phonon lifetimes of 5 ps at 75 K and 2 ps at 280 K.

UR - https://www.scopus.com/pages/publications/79955994123

UR - https://www.scopus.com/pages/publications/79955994123#tab=citedBy

U2 - 10.1063/1.1481186

DO - 10.1063/1.1481186

M3 - Article

AN - SCOPUS:79955994123

SN - 0003-6951

VL - 80

SP - 4303

EP - 4305

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 23

ER -

Nonequilibrium optical phonon generation by steady-state electron transport in quantum-cascade lasers

Abstract

All Science Journal Classification (ASJC) codes

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