Ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides

AD Bristow; JPR Wells; WH Fan; AM Fox; MS Skolnick; DM Whittaker; A Tahraoui; Thomas Fraser Krauss; JS Roberts

doi:10.1063/1.1598647

Ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides

AD Bristow, JPR Wells, WH Fan, AM Fox, MS Skolnick, DM Whittaker, A Tahraoui, Thomas Fraser Krauss, JS Roberts

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

Abstract

We have used femtosecond pump-probe spectroscopy to study the ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides in the near-infrared spectral region. The modulation of the reflectivity spectra due to the refractive index change produced by photogenerated carriers was measured. We observed an instantaneous pump-induced shift in the wavelength of a photonic resonance at 882 nm with a fast decay time of approximate to8 ps. The magnitude of the reflectivity change was very large at wavelengths close to the photonic resonance, with a maximum value of DeltaR/R>30% at 877 nm. These results confirm the excellent potential of photonic crystal waveguides in ultrafast nonlinear switching applications. (C) 2003 American Institute of Physics.

Original language	English
Pages (from-to)	851-853
Number of pages	3
Journal	Applied Physics Letters
Volume	83
Issue number	5
DOIs	https://doi.org/10.1063/1.1598647
Publication status	Published - 4 Aug 2003

Keywords

BAND-GAP MATERIALS
PULSES
REFLECTIVITY
PROPAGATION
LIGHT

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10.1063/1.1598647

Cite this

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title = "Ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides",

abstract = "We have used femtosecond pump-probe spectroscopy to study the ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides in the near-infrared spectral region. The modulation of the reflectivity spectra due to the refractive index change produced by photogenerated carriers was measured. We observed an instantaneous pump-induced shift in the wavelength of a photonic resonance at 882 nm with a fast decay time of approximate to8 ps. The magnitude of the reflectivity change was very large at wavelengths close to the photonic resonance, with a maximum value of DeltaR/R>30% at 877 nm. These results confirm the excellent potential of photonic crystal waveguides in ultrafast nonlinear switching applications. (C) 2003 American Institute of Physics.",

keywords = "BAND-GAP MATERIALS, PULSES, REFLECTIVITY, PROPAGATION, LIGHT",

author = "AD Bristow and JPR Wells and WH Fan and AM Fox and MS Skolnick and DM Whittaker and A Tahraoui and Krauss, {Thomas Fraser} and JS Roberts",

year = "2003",

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doi = "10.1063/1.1598647",

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T1 - Ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides

AU - Bristow, AD

AU - Wells, JPR

AU - Fan, WH

AU - Fox, AM

AU - Skolnick, MS

AU - Whittaker, DM

AU - Tahraoui, A

AU - Krauss, Thomas Fraser

AU - Roberts, JS

PY - 2003/8/4

Y1 - 2003/8/4

N2 - We have used femtosecond pump-probe spectroscopy to study the ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides in the near-infrared spectral region. The modulation of the reflectivity spectra due to the refractive index change produced by photogenerated carriers was measured. We observed an instantaneous pump-induced shift in the wavelength of a photonic resonance at 882 nm with a fast decay time of approximate to8 ps. The magnitude of the reflectivity change was very large at wavelengths close to the photonic resonance, with a maximum value of DeltaR/R>30% at 877 nm. These results confirm the excellent potential of photonic crystal waveguides in ultrafast nonlinear switching applications. (C) 2003 American Institute of Physics.

AB - We have used femtosecond pump-probe spectroscopy to study the ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides in the near-infrared spectral region. The modulation of the reflectivity spectra due to the refractive index change produced by photogenerated carriers was measured. We observed an instantaneous pump-induced shift in the wavelength of a photonic resonance at 882 nm with a fast decay time of approximate to8 ps. The magnitude of the reflectivity change was very large at wavelengths close to the photonic resonance, with a maximum value of DeltaR/R>30% at 877 nm. These results confirm the excellent potential of photonic crystal waveguides in ultrafast nonlinear switching applications. (C) 2003 American Institute of Physics.

KW - BAND-GAP MATERIALS

KW - PULSES

KW - REFLECTIVITY

KW - PROPAGATION

KW - LIGHT

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U2 - 10.1063/1.1598647

DO - 10.1063/1.1598647

M3 - Article

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EP - 853

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

ER -

Ultrafast nonlinear response of AlGaAs two-dimensional photonic crystal waveguides

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