Terahertz four-wave mixing spectroscopy for study of ultrafast dynamics in a semiconductor optical amplifier

Zhou, Jianhui and Park, Namkyoo and Dawson, Jay W. and Vahala, Kerry J. and Newkirk, Michael A. and Miller, Barry I. (1993) Terahertz four-wave mixing spectroscopy for study of ultrafast dynamics in a semiconductor optical amplifier. Applied Physics Letters, 63 (9). pp. 1179-1181. ISSN 0003-6951 http://resolver.caltech.edu/CaltechAUTHORS:ZHOapl93b

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Abstract

Ultrafast dynamics in a 1.5-µm tensile-strained quantum-well optical amplifier has been studied by highly nondegenerate four-wave mixing at detuning frequencies up to 1.7 THz. Frequency response data indicate the presence of two ultrafast physical processes with characteristic relaxation lifetimes of 650 fs and <100 fs. The longer time constant is believed to be associated with the dynamic carrier heating effect. This is in agreement with previous time-domain pump-probe measurements using ultrashort optical pulses.

Item Type:	Article
Additional Information:	©1993 American Institute of Physics. (Received 2 April 1993; accepted 18 June 1993) This work was supported in part by the Office of Naval Research under Contract No. N000l4-91-1524, and by Northrop Corporation. The authors would also like to thank Dr. Doug Hall of Corning Inc. for critical assistance in the construction of the Er-doped fiber amplifiers used in this experiment.
Subject Keywords:	SEMICONDUCTOR LASERS; AMPLIFIERS; QUANTUM WELLS; FOUR–WAVE MIXING; SPECTROSCOPY; SWITCHING; DYNAMICS; RELAXATION TIME; CHARGE CARRIERS; MEASURING METHODS
Record Number:	CaltechAUTHORS:ZHOapl93b
Persistent URL:	http://resolver.caltech.edu/CaltechAUTHORS:ZHOapl93b
Alternative URL:	http://dx.doi.org/10.1063/1.109763
Usage Policy:	No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:	2202
Collection:	CaltechAUTHORS
Deposited By:	Archive Administrator
Deposited On:	14 Mar 2006
Last Modified:	26 Dec 2012 08:47

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