Quantum beats of free and bound excitons in GaN

K. Kyhm; R. A. Taylor; J. F. Ryan; T. Aoki; M. Kuwata-Gonokami; B. Beaumont; P. Gibart

doi:10.1063/1.1391411

Quantum beats of free and bound excitons in GaN

K. Kyhm^*, R. A. Taylor, J. F. Ryan, T. Aoki, M. Kuwata-Gonokami, B. Beaumont, P. Gibart

^*Corresponding author for this work

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

3 Citations (Scopus)

Abstract

We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D ⁰X) and A excitons (X_A) results in quantum beats, corresponding to the energy splitting between D ⁰X and X_A. The temperature-dependent dephasing rate is used to deduce the strength of the D ⁰X-acoustic-phonon interaction via the homogeneous linewidth.

Original language	English
Pages (from-to)	1097-1099
Number of pages	3
Journal	Applied Physics Letters
Volume	79
Issue number	8
DOIs	https://doi.org/10.1063/1.1391411
Publication status	Published - 2001 Aug 20
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Quantum beats of free and bound excitons in GaN",

abstract = "We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D 0X) and A excitons (XA) results in quantum beats, corresponding to the energy splitting between D 0X and XA. The temperature-dependent dephasing rate is used to deduce the strength of the D 0X-acoustic-phonon interaction via the homogeneous linewidth.",

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T1 - Quantum beats of free and bound excitons in GaN

AU - Kyhm, K.

AU - Taylor, R. A.

AU - Ryan, J. F.

AU - Aoki, T.

AU - Kuwata-Gonokami, M.

AU - Beaumont, B.

AU - Gibart, P.

PY - 2001/8/20

Y1 - 2001/8/20

N2 - We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D 0X) and A excitons (XA) results in quantum beats, corresponding to the energy splitting between D 0X and XA. The temperature-dependent dephasing rate is used to deduce the strength of the D 0X-acoustic-phonon interaction via the homogeneous linewidth.

AB - We present spectrally resolved and time-integrated four-wave mixing measurements at coherent dynamics of bound excitons in a high-quality GaN epilayer. Coherent excitation, with co-circular polarized light, of the neutral donor-bound excitons (D 0X) and A excitons (XA) results in quantum beats, corresponding to the energy splitting between D 0X and XA. The temperature-dependent dephasing rate is used to deduce the strength of the D 0X-acoustic-phonon interaction via the homogeneous linewidth.

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Quantum beats of free and bound excitons in GaN

Abstract

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