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research article

Hot phonons and Auger related carrier heating in semiconductor optical amplifiers

Fehr, J. N.
•
Dupertuis, M. A.  
•
Hessler, T. P.
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2002
Ieee Journal of Quantum Electronics

We have directly measured the carrier temperature in semiconductor optical amplifiers (SOAs) via spontaneous emission and we demonstrate an unexpectedly high carrier temperature. The direct correlation of the temperature increase with the carrier density suggests Auger recombination as the main heating mechanism. We have developed a model based on rate equations for the total energy density of electrons, holes, and longitudinal-optical phonons. This model allows us to explain the thermal behavior of carrier and phonon populations. The strong heating observed is shown to be due to the combined effects of hot phonon and Auger recombination in the valence band. We also observe an evolution of the Auger process, as the density is increased, from cubic to square dependence with coefficients C-3 = 0.9 10(-28) cm(6) s(-1) and C-2 = 2.4 10(-10) cm(3) s(-1). This change is explained by the hole quasi-Fermi level entering the valence band.

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Type
research article
DOI
10.1109/JQE.2002.1005418
Web of Science ID

WOS:000175929900017

Author(s)
Fehr, J. N.
Dupertuis, M. A.  
Hessler, T. P.
Kappei, L.  
Marti, D.  
Salleras, F.  
Nomura, M. S.
Deveaud, B.  
Emery, J. Y.
Dagens, B.
Date Issued

2002

Published in
Ieee Journal of Quantum Electronics
Volume

38

Issue

6

Start page

674

End page

681

Subjects

hot carriers

•

phonons

•

photoluminescence

•

semiconductor optical

•

amplifier

•

spontaneous emission

•

QUANTUM WELL LASERS

•

SPONTANEOUS EMISSION

•

TEMPERATURE-DEPENDENCE

•

NONLINEAR GAIN

•

LO PHONONS

•

DYNAMICS

•

INGAASP

•

GAAS

•

SPONTANEOUS EMISSION

Note

Swiss Fed Inst Technol Lausanne, Inst Quantum Elect & Photon, CH-1015 Lausanne, Switzerland. Alcatel Res & Innovat, F-91461 Marcoussis, France. Fehr, JN, Swiss Fed Inst Technol Lausanne, Inst Quantum Elect & Photon, CH-1015 Lausanne, Switzerland.

ISI Document Delivery No.: 557VU

Cited Reference Count: 28

Cited References:

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Editorial or Peer reviewed

REVIEWED

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August 31, 2007
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/11474
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