Light craft: creating unusual properties in glass with light


Kazansky, P.G. (2004) Light craft: creating unusual properties in glass with light At Photon Craft International Co-operative Project Symposium. 24 Sep 2004.

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Description/Abstract

Glass dominates modern optical technologies. Nonlinear optical processes, such as second-harmonic generation and parametric frequency conversion, are technological very attractive and require a second-order optical nonlinearity - a chi(2), which is normally absent in glass owing to its inversion symmetry. Thus, when light-induced frequency doubling was first discovered wide-ranging studies ensued into the mechanism and properties of this unexpected phenomenon. The mystery of self-organized chi(2) gratings was finally solved on the basis of a new physical phenomenon - the coherent photogalvanic effect, consisting in quantum interference between light fields at two different frequencies, w and 2w, which excites a phase dependent current (coherent photocurrent). Coherent photocurrent creates quasi-phase matching chi(2) gratings. Moreover in the experiments on electric-field second harmonic generation in optical fibres the first evidence of phase dependent modulation of a total cross-section of ionization due to quantum interference (coherent photoconductivity) in solid state materials has been obtained.

Item Type: Conference or Workshop Item (Other)
Venue - Dates: Photon Craft International Co-operative Project Symposium, 2004-09-24 - 2004-09-24
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ePrint ID: 54060
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Date Event
September 2004Published
Date Deposited: 11 Aug 2008
Last Modified: 16 Apr 2017 17:47
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/54060

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