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http://hdl.handle.net/2289/3781| Title: | Fine structure in spatial self-phase modulation patterns: at a glance determination of the sign of optical nonlinearity in highly nonlinear films |
| Authors: | Lucchetti, L. Suchand Sandeep, C.S. Simoni, F. |
| Issue Date: | Mar-2009 |
| Publisher: | IOP Publishing Ltd. |
| Citation: | Journal of Optics A: Pure and Applied Optics, 2009, Vol. 11(3), p034002 |
| Abstract: | We present a fast and simple method to determine the sign of the nonlinear coefficient n2 in films with high nonlinearity. The method exploits the effect of spatial self-phase modulation and the role of wavefront curvature that leads to a specific far field pattern that is dependent on the sign of n2 and on the sample position. The method can be considered a 'visualization' of the Z-scan for highly nonlinear films. Application to nematic liquid crystals under different experimental conditions confirms the results expected from the theory. |
| Description: | Restricted Access. |
| URI: | http://hdl.handle.net/2289/3781 |
| ISSN: | 1464-4258 1741-3567 (Online) |
| Alternative Location: | http://dx.doi.org/10.1088/1464-4258/11/3/034002 |
| Copyright: | 2009 IOP Publishing Ltd. |
| Appears in Collections: | Research Papers (LAMP) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 2009_JOpA_V11_034002.pdf Restricted Access | 7p. | 1 MB | Adobe PDF | View/Open Request a copy |
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