Investigation of photorefractive subharmonics in the absence of wavemixing
| Data(s) |
01/09/1995
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| Resumo |
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 O. It is shown that in a large region of intensity and applied electric field the optimum value O 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. |
| Formato |
application/pdf |
| Identificador |
http://eprints.aston.ac.uk/12674/1/84970AB8-DFC1-291F-B382F3466BB4D78B_33562.pdf Sturman, B.I.; McClelland, T.E.; Webb, David J.; Shamonina, E. and Ringhofer, K.H. (1995). Investigation of photorefractive subharmonics in the absence of wavemixing. Journal of the Optical Society of America B, 12 (9), pp. 1621-1627. |
| Relação |
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-12-9-1621 http://eprints.aston.ac.uk/12674/ |
| Tipo |
Article PeerReviewed |
