Linear and nonlinear waveguiding in Rhodamine-doped
Citation:
B. Rossi, H. J. Byrne, and W Blau, G. Pratesi and S. Sottini, Linear and nonlinear waveguiding in Rhodamine-doped, Journal of the Optical Society of America B - Optical Physics, 8, 12, 1991, 2449 - 2452Download Item:
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Abstract:
Planar waveguiding of 350-ps pulses, at a wavelength in the region of the long-wavelength tail of the absorption, is observed by coupling by prism into spun films of Rhodamine-B-doped epoxy films. In a 13-?.m-thick film, ?20 modes are supported at 633 nm. The angle of optimum coupling is seen to be intensity dependent; the angle increases with increasing intensity, indicating a positive real component of the material nonlinearity at all wavelengths investigated. The throughput of the guide is also seen to be strongly intensity dependent, indicating a strong intensity dependence of the transmission of the film. The observed behavior is compared with the intensity dependence of the unguided transmission, and the intensity-coupling efficiencies are estimated. As we know the coupling efficiency, we estimate the real component of the nonlinearity to be 7.0 ? 0.5 ? 10?20 m2 V?2 at 616 nm and 5.0 ? 0.5 ? 10?20 m2V?2at 635 nm from the intensity dependence of the coupling angle
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http://people.tcd.ie/wblauDescription:
PUBLISHED
Author: BLAU, WERNER
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Journal of the Optical Society of America B - Optical Physics;8;
12;
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Planar waveguidingLicences: