Measurement of pulse amplitude and phase distortion in a semiconductor optical amplifier: from pulse compression to breakup

Romstad, F., Borri, Paola ORCID: https://orcid.org/0000-0002-7873-3314, Langbein, Wolfgang Werner ORCID: https://orcid.org/0000-0001-9786-1023, Mork, J. and Hvam, J. M. 2000. Measurement of pulse amplitude and phase distortion in a semiconductor optical amplifier: from pulse compression to breakup. IEEE Photonics Technology Letters 12 (12) , pp. 1674-1676. 10.1109/68.896345

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Abstract

We have performed extensive measurements of the propagation of ultrashort pulses in a semiconductor bulk amplifier using an ultrasensitive cross frequency-resolved optical gating technique. Pulses of 175-fs duration with energies from below 1 fJ to above 100 pJ are measured both in amplitude and phase after propagation through the device. While only moderate reshaping effects occur at pulse energies of below 1 pJ, strong amplitude distortion together with nonlinear chirp is found for input energies of 5-100 pJ. This leads to a pulse narrowing by more than a factor of two when the amplifier is biased for material transparency or absorption and to a pronounced pulse breakup in the gain regime.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Biosciences Schools > Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	Distortion; optical communication; optical propagation in nonlinera media; optical pulse compression; optical pulse measurements; propagation; semiconductor device measurements; semiconductor optical amplifiers
Publisher:	IEEE
ISSN:	1041-1135
Last Modified:	25 Oct 2022 09:44
URI:	https://orca.cardiff.ac.uk/id/eprint/59805

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