First demonstration of two photon absorption in a semiconductor waveguide pumped by a diode laser

H. K. Tsang; P. P. Vasil'ev; I. H. White; R. V. Penty; J. S. Aitchison

doi:10.1049/el:19931105

First demonstration of two photon absorption in a semiconductor waveguide pumped by a diode laser

H. K. Tsang, P. P. Vasil'ev, I. H. White, R. V. Penty, J. S. Aitchison

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

Abstract

For the first time, lasers have been used to induce a fast all-optical nonresonant nonlinearity at wavelengths well beyond the band edge in a GaAs/GaAlAs multiquantum well waveguide. Using a Q-switched diode laser, which gave optical pulses of 3.5 ps duration and 7W peak power, an intensity-dependent transmission was recorded that was consistent with the presence of two photon absorption in the waveguide. The measured two photon absorption coefficient was 11°2cm/GW.

Original language	English
Pages (from-to)	1660-1661
Number of pages	2
Journal	Electronics Letters
Volume	29
Issue number	18
DOIs	https://doi.org/10.1049/el:19931105
Publication status	Published - 1 Jan 1993

Keywords

Nonlinear optics
Optical waveguides

ASJC Scopus subject areas

Electrical and Electronic Engineering

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10.1049/el:19931105

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abstract = "For the first time, lasers have been used to induce a fast all-optical nonresonant nonlinearity at wavelengths well beyond the band edge in a GaAs/GaAlAs multiquantum well waveguide. Using a Q-switched diode laser, which gave optical pulses of 3.5 ps duration and 7W peak power, an intensity-dependent transmission was recorded that was consistent with the presence of two photon absorption in the waveguide. The measured two photon absorption coefficient was 11°2cm/GW.",

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AU - Vasil'ev, P. P.

AU - White, I. H.

AU - Penty, R. V.

AU - Aitchison, J. S.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - For the first time, lasers have been used to induce a fast all-optical nonresonant nonlinearity at wavelengths well beyond the band edge in a GaAs/GaAlAs multiquantum well waveguide. Using a Q-switched diode laser, which gave optical pulses of 3.5 ps duration and 7W peak power, an intensity-dependent transmission was recorded that was consistent with the presence of two photon absorption in the waveguide. The measured two photon absorption coefficient was 11°2cm/GW.

AB - For the first time, lasers have been used to induce a fast all-optical nonresonant nonlinearity at wavelengths well beyond the band edge in a GaAs/GaAlAs multiquantum well waveguide. Using a Q-switched diode laser, which gave optical pulses of 3.5 ps duration and 7W peak power, an intensity-dependent transmission was recorded that was consistent with the presence of two photon absorption in the waveguide. The measured two photon absorption coefficient was 11°2cm/GW.

KW - Nonlinear optics

KW - Optical waveguides

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ER -

First demonstration of two photon absorption in a semiconductor waveguide pumped by a diode laser

Abstract

Keywords

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