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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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.
|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|
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|Deposited On:||14 Mar 2006|
|Last Modified:||26 Dec 2012 08:47|
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