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Time-delayed four-wave mixing: the interplay between laser field fluctuations and the atomic memory time

Time-delayed four-wave mixing: the interplay between laser field fluctuations and the atomic memory time
Time-delayed four-wave mixing: the interplay between laser field fluctuations and the atomic memory time
Coherent signals induced by fundamentally incoherent phenomena through a four-wave mixing process are among the most intriguing and subtle effects in nonlinear spectroscopy. These effects were initially observed by Bloembergen and his co-workers in the form of pressure-induced extra resonances in four-wave mixing. Using standard perturbance techniques based on the optical Bloch equations, they suggested that these collision induced resonances were the result of a "destruction of the destructive interference" existent between two alternate time-ordered pathways. Subsequently, Prior et al realised that fluctuations in the incident radiation fields could play essentially the same role as the collisionally induced dephasing. In practice, of course, both collisional dephasing and field fluctuations are present in a typical atomic vapor pulsed four-wave mixing experiment. If the timescales governing these two effects approach one another, one can expect to gain valuable new insight into this fascinating process of "incoherently" inducing a coherent signal
Gomes, J.V.
d0cc0605-aef8-4299-93c1-51ce82d168dc
Belsley, M.
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Kaczmarek, M.
73185a18-7eee-44a6-a2ff-e3c616bf3547
Ewart, P.
ff22a0d8-2e47-46cf-a721-64b5f68da6a3
Gomes, J.V.
d0cc0605-aef8-4299-93c1-51ce82d168dc
Belsley, M.
54f4c89b-0677-4d8f-8c6d-0276b8b1b998
Kaczmarek, M.
73185a18-7eee-44a6-a2ff-e3c616bf3547
Ewart, P.
ff22a0d8-2e47-46cf-a721-64b5f68da6a3

Gomes, J.V., Belsley, M., Kaczmarek, M. and Ewart, P. (1996) Time-delayed four-wave mixing: the interplay between laser field fluctuations and the atomic memory time. European Quantum Electronics Conference (EQEC), Germany. 08 - 13 Sep 1996.

Record type: Conference or Workshop Item (Paper)

Abstract

Coherent signals induced by fundamentally incoherent phenomena through a four-wave mixing process are among the most intriguing and subtle effects in nonlinear spectroscopy. These effects were initially observed by Bloembergen and his co-workers in the form of pressure-induced extra resonances in four-wave mixing. Using standard perturbance techniques based on the optical Bloch equations, they suggested that these collision induced resonances were the result of a "destruction of the destructive interference" existent between two alternate time-ordered pathways. Subsequently, Prior et al realised that fluctuations in the incident radiation fields could play essentially the same role as the collisionally induced dephasing. In practice, of course, both collisional dephasing and field fluctuations are present in a typical atomic vapor pulsed four-wave mixing experiment. If the timescales governing these two effects approach one another, one can expect to gain valuable new insight into this fascinating process of "incoherently" inducing a coherent signal

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Published date: 1996
Venue - Dates: European Quantum Electronics Conference (EQEC), Germany, 1996-09-08 - 1996-09-13

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Local EPrints ID: 76848
URI: https://eprints.soton.ac.uk/id/eprint/76848
PURE UUID: 353ae87a-55e3-4e9a-beb3-70f4d0a3d8e2

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Date deposited: 11 Mar 2010
Last modified: 19 Jul 2019 23:38

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