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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.

Record type: Conference or Workshop Item (Other)


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.

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Published date: September 2004
Venue - Dates: Photon Craft International Co-operative Project Symposium, 2004-09-24 - 2004-09-24


Local EPrints ID: 54060
PURE UUID: ec224875-56bf-4592-8381-8732e2d70751

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Date deposited: 11 Aug 2008
Last modified: 17 Jul 2017 14:36

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