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Highly nondegenerate four-wave mixing efficiency of an asymmetric coupled quantum well structure

Paiella, Roberto and Vahala, Kerry J. (1995) Highly nondegenerate four-wave mixing efficiency of an asymmetric coupled quantum well structure. Applied Physics Letters, 66 (20). pp. 2619-2621. ISSN 0003-6951. http://resolver.caltech.edu/CaltechAUTHORS:PAIapl95

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Abstract

An asymmetric coupled quantum well structure is theoretically investigated as a means of tailoring the conversion efficiency of the four-wave mixing process at terahertz detuning rates. In this structure, a coherent electronic oscillation between the two wells can be excited that introduces a resonance peak in the four-wave mixing frequency response. A calculation based on the density matrix formalism shows that an increase in the power conversion efficiency on the order of 10 dB can be attained at the selected resonance frequency for low temperature operation. Finally, we propose a novel technique for exciting the interwell oscillations that takes advantage of the polarization dependence of the interband optical transitions in alternating strain quantum wells.


Item Type:Article
Additional Information:©1995 American Institute of Physics. (Received 8 November 1994; accepted 28 February 1995) This work was sponsored by the Office of Naval Research (N00014-91-J-1524) and the National Science Foundation (ECS-9412862).
Subject Keywords:QUANTUM WELLS; FOUR–WAVE MIXING; COUPLING; SPECTRAL RESPONSE; DENSITY MATRIX; INTERNAL STRAINS; POLARIZATION; INTERBAND TRANSITIONS
Record Number:CaltechAUTHORS:PAIapl95
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:PAIapl95
Alternative URL:http://dx.doi.org/10.1063/1.113103
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:3102
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:15 May 2006
Last Modified:26 Dec 2012 08:52

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