CUED Publications database

Two-photon absorption and self-phase modulation in InGaAsP/InP multi-quantum-well waveguides

Tsang, HK and Penty, RV and White, IH and Grant, RS and Sibbett, W and Soole, JBD and Leblanc, HP and Andreadakis, NC and Bhat, R and Koza, MA (1991) Two-photon absorption and self-phase modulation in InGaAsP/InP multi-quantum-well waveguides. Journal of Applied Physics, 70. pp. 3992-3994. ISSN 0021-8979

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Abstract

We report the first measurement of two-photon absorption (TPA) and self-phase modulation in an InGaAsP/InP multi-quantum-well waveguide. The TPA coefficient, β2, was found to be 60±10 cm/GW at 1.55 μm. Despite operating at 200 nm from the band edge, self-phase modulation as high as 8±2 rad was observed for 30-ps optical pulses at 3.8-W peak input power. A theoretical calculation indicates that this enhanced phase modulation is primarily due to bandfilling in the quantum wells and the free-carrier plasma effect.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Photonics
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:55
Last Modified: 08 Dec 2014 02:37
DOI: 10.1063/1.349168