Experimental investigation of the transient dynamics of slow light in ruby

Wisniewski-Barker, E., Gibson, G. M., Franke-Arnold, S., Shi, Z., Narum, P., Boyd, R. W. and Padgett, M. J. (2014) Experimental investigation of the transient dynamics of slow light in ruby. New Journal of Physics, 16, p. 123054. (doi:10.1088/1367-2630/16/12/123054)

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Publisher's URL: http://dx.doi.org/10.1088/1367-2630/16/12/123054

Abstract

When a pulsed light beam propagates through ruby, it is delayed by a slow-light mechanism. This mechanism has been the subject of debate (Wisniewski-Barker et al 2013 New J. Phys. 15 083020; Kozlov et al 2014 New J. Phys. 16 038001; Wisniewski-Barker et al 2014 New J. Phys. 16 038002). To distinguish between the two main proposed mechanisms, we investigate the trailing edge of a square-wave pulsed laser beam propagating through ruby. Our observation of a pronounced tail on the trailing edge of the transmitted pulse cannot be explained solely by the effects of a time-varying absorber acting upon the incident pulse. Therefore, our observation of the creation of a tail at the trailing edge of the pulse provides evidence for a complicated model of slow light in ruby that requires more than pulse reshaping. The different delays of individual Fourier components of the pulse signal explain the pulse distortion that occurs upon transmission through the ruby and must be accounted for by any model that attempts to describe the effects of slow light in ruby.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Gibson, Dr Graham and Padgett, Professor Miles and Boyd, Professor Robert and Franke-Arnold, Dr Sonja
Authors: Wisniewski-Barker, E., Gibson, G. M., Franke-Arnold, S., Shi, Z., Narum, P., Boyd, R. W., and Padgett, M. J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:New Journal of Physics
Publisher:Institute of Physics Publishing Ltd.
ISSN:1367-2630
Copyright Holders:Copyright © 2014 The Authors
First Published:First published in New Journal of Physics 16(12):123054
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
549871Challenges in Orbital Angular MomentumMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/I012451/1P&A - PHYSICS & ASTRONOMY
549872Challenges in Orbital Angular MomentumMiles PadgettEngineering & Physical Sciences Research Council (EPSRC)EP/I012451/1P&A - PHYSICS & ASTRONOMY