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Heterodyne pump-probe and four-wave mixing in semiconductor optical amplifiers using balanced lock-in detection

Borri, Paola, Langbein, Wolfgang Werner, Mørk, J. and Hvam, J. M. 1999. Heterodyne pump-probe and four-wave mixing in semiconductor optical amplifiers using balanced lock-in detection. Optics Communications 169 (1-6) , pp. 317-324. 10.1016/S0030-4018(99)00391-0

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Abstract

We demonstrate a new detection scheme for pump-probe and four-wave mixing heterodyne experiments, using balanced detection and a dual-phase lock-in for spectral filtering. The technique allows the use of low repetition-rate laser systems, as is demonstrated on an InGaAsP/InP bulk optical amplifier at 1.53 μm. Ultrafast pump-induced changes in the amplitude and phase of the transmitted probe signal are simultaneously measured, going from small to large signal changes and with no need of an absolute phase calibration, showing the versatility and the sensitivity of this detection scheme. The results for small perturbations are consistent with previous pump-probe experiments reported in literature. Time-resolved four-wave mixing in the absorption regime of the device is measured, and compared with numerical simulations, indicating a 100 fs dephasing time.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Biosciences
Subjects: Q Science > QC Physics
Uncontrolled Keywords: Ultrafast spectroscopy; Semiconductor laser
Publisher: Elsevier
ISSN: 0030-4018
Last Modified: 16 May 2019 23:14
URI: http://orca.cf.ac.uk/id/eprint/60041

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