Sturman, Boris I. and McClelland, T.E. and Webb, David J. and Shamonina, E. and Ringhofer, K.H. (1995) Investigation Of Photorefractive Subharmonics In The Absence Of Wave Mixing. Journal of the Optical Society of America B, 12 (9). pp. 1621-1627. ISSN 0740-3224. (doi:https://doi.org/10.1364/JOSAB.12.001621) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)
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Using a new optical configuration free from the influence of photorefractive optical nonlinearity, we investigate the main characteristics of the spatial subharmonic K/2 excited in a Bi12SiO20 crystal by a light-intensity pattern with wave Vector K and frequency Omega. It is shown that in a large region of intensity and applied electric field the optimum value Omega of the frequency corresponds to the conditions of parametric excitation of the weakly damped eigenmodes of the medium: the space-charge waves. The threshold and above-threshold characteristics of the subharmonic regime are in good agreement with the theory.
|Divisions:||Faculties > Sciences > School of Physical Sciences|
|Depositing User:||I.T. Ekpo|
|Date Deposited:||31 Oct 2009 11:23 UTC|
|Last Modified:||25 Jun 2014 11:43 UTC|
|Resource URI:||https://kar.kent.ac.uk/id/eprint/19078 (The current URI for this page, for reference purposes)|