| Autor: |
Sean Liu, Wei Lin Wang, Chien Cheng Fang, Tzer-Hsiang Huang, Chia Chen Hsu |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; 1/1/2005, Vol. 97 Issue 1, p013103, 10p, 3 Diagrams, 4 Graphs |
| Abstrakt: |
Near-resonant optical pumping was used to modulate third-order susceptibility χ(3) in disperse red 1 doped poly(methylmethacrylate) thin films. An optically pumped degenerate four-wave mixing (DFWM) experiment was conducted to examine the photoreactive phase conjugation (PC) signals. Experimental results indicated a large anisotropy in PC signals arising from |χ3333(3)|2, and almost isotropic PC signals from |χ1331(3)|2 under s-polarized and p-polarized pump fields. Additionally, a dynamic microscopic model, based on the theory developed by Sekkat et al.[Synth. Met. 54, 373 (1993); J. Phys. Chem. B 106, 12407 (2002); Opt. Commun. 229, 291 (2004)] was presented to describe the observed optical nonlinear responses. Results from the model were generally consistent with those of the optically pumped DFWM experiment. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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