Many-body optical gain and intraband relaxation time of wurtzite InGaNGaN quantum-well lasers and comparison with experiment

Seoung Hwan Park; Doyeol Ahn; E. H. Park; T. K. Yoo; Yong Tak Lee

doi:10.1063/1.2001744

Many-body optical gain and intraband relaxation time of wurtzite InGaNGaN quantum-well lasers and comparison with experiment

Seoung Hwan Park, Doyeol Ahn, E. H. Park, T. K. Yoo, Yong Tak Lee

School of Electrical and Computer Engineering

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

17 Scopus citations

Abstract

The optical gain and the intraband relaxation time of wurtzite InGaNGaN QW lasers are investigated theoretically considering the non-Markovian gain model with many-body effects. Gain spectra are compared with those obtained from the experiment. The calculated intraband relaxation time is about 24 fs at the subband edge and gradually increases with the energy. The intraband relaxation time is shown to be nearly independent of the sheet carrier density in an investigated range. The calculated gain spectra is in good agreement with the experiment. The intraband relaxation time τin obtained from fitting with experiment is 25 fs. This value agrees well with the calculated value (∼24 fs) at the subband edge, for which most of optical transitions occur.

Original language	English
Article number	044103
Journal	Applied Physics Letters
Volume	87
Issue number	4
DOIs	https://doi.org/10.1063/1.2001744
State	Published - 25 Jul 2005

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title = "Many-body optical gain and intraband relaxation time of wurtzite InGaNGaN quantum-well lasers and comparison with experiment",

abstract = "The optical gain and the intraband relaxation time of wurtzite InGaNGaN QW lasers are investigated theoretically considering the non-Markovian gain model with many-body effects. Gain spectra are compared with those obtained from the experiment. The calculated intraband relaxation time is about 24 fs at the subband edge and gradually increases with the energy. The intraband relaxation time is shown to be nearly independent of the sheet carrier density in an investigated range. The calculated gain spectra is in good agreement with the experiment. The intraband relaxation time τin obtained from fitting with experiment is 25 fs. This value agrees well with the calculated value (∼24 fs) at the subband edge, for which most of optical transitions occur.",

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AU - Park, Seoung Hwan

AU - Ahn, Doyeol

AU - Park, E. H.

AU - Yoo, T. K.

AU - Lee, Yong Tak

PY - 2005/7/25

Y1 - 2005/7/25

N2 - The optical gain and the intraband relaxation time of wurtzite InGaNGaN QW lasers are investigated theoretically considering the non-Markovian gain model with many-body effects. Gain spectra are compared with those obtained from the experiment. The calculated intraband relaxation time is about 24 fs at the subband edge and gradually increases with the energy. The intraband relaxation time is shown to be nearly independent of the sheet carrier density in an investigated range. The calculated gain spectra is in good agreement with the experiment. The intraband relaxation time τin obtained from fitting with experiment is 25 fs. This value agrees well with the calculated value (∼24 fs) at the subband edge, for which most of optical transitions occur.

AB - The optical gain and the intraband relaxation time of wurtzite InGaNGaN QW lasers are investigated theoretically considering the non-Markovian gain model with many-body effects. Gain spectra are compared with those obtained from the experiment. The calculated intraband relaxation time is about 24 fs at the subband edge and gradually increases with the energy. The intraband relaxation time is shown to be nearly independent of the sheet carrier density in an investigated range. The calculated gain spectra is in good agreement with the experiment. The intraband relaxation time τin obtained from fitting with experiment is 25 fs. This value agrees well with the calculated value (∼24 fs) at the subband edge, for which most of optical transitions occur.

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VL - 87

JO - Applied Physics Letters

JF - Applied Physics Letters

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M1 - 044103

ER -

Many-body optical gain and intraband relaxation time of wurtzite InGaNGaN quantum-well lasers and comparison with experiment

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