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Coherent population density control by ultra-high repetition rate femtosecond optical pulse pairs for optical switching.

Yu, X.Y. and Dai, D.C. and Cai, Z.G. and Luo, Q. and Ninulescu, V. and Zhou, J.Y. (1999) 'Coherent population density control by ultra-high repetition rate femtosecond optical pulse pairs for optical switching.', Optics communications., 164 (4-6). pp. 177-184.

Abstract

A semi-classical theory of coherent population density control (CPDC) by ultra-high repetition rate (100 GHz) femtosecond (fs) optical pulse pairs was developed. The CPDC involving the use of fs pulse pairs to induce fast switching ‘on' and ‘off' for electronic transition is analyzed based on optical-Bloch equations. The results of numerical simulation for the population density changes under the excitation of the ultra-high repetition rate fs optical pulse pairs are presented. A modulation depth parameter is introduced to describe the population ratios in the ‘on' and ‘off' states. The control effect is discussed in terms of material and control pulse parameters. The design consideration for the optical materials suitable for ultra-high speed CPDC is described. Rare earth compounds were synthesized and characterized based on the derived design guidelines.

Item Type:Article
Keywords:Coherent control, Ultra-high repetition rate, Optical switching.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1016/S0030-4018(99)00198-4
Record Created:15 Nov 2010 12:20
Last Modified:15 Nov 2010 12:28

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