| Original Articles |
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Third-Order Optical Nonlinearities in the Poly(2-Chloro-1,4-Phenylene Vinylene) Thin Film |
| SUN Zhen-rong;YANG Xi-hua;HUANG Yan-ping;DING Liang-en;QIN Li-juan;WANG Zu-geng |
| Department of Physics, Laboratory for Quantum Optics, East China Normal University, Shanghai 200062 |
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| Cite this article: |
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SUN Zhen-rong, YANG Xi-hua, HUANG Yan-ping et al 1998 Chin. Phys. Lett. 15 810-812 |
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Abstract A new polymer thin film, ploy (2-chloro-1,4-phenylene vinylene) (ClPPV), with high environmental and thermal stability, high optical damage threshold, and good film quality, was successfully prepared by the “precursor-route” method. Its third-order optical nonlinearities were measured by picosecond forward three-dimensional degenerate four-wave mixing technique. In the near resonance region (532nm), the measured third-order nonlinear optical coefficients x(3)zzzz and x(3)yzzy are 9.1 x 10-l0 and 7.2 x 10-11 esu, respectively, and its response time is quite fast, estimated to be less than picosecond. The Kerr effect, which arises from the distortion of the large quasi-one-dimensional π-conjugated electronic charge distribution of ClPPV, is the main reason for generating third-order optical nonlinearities.
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| Keywords:
42.65.An
78.66.Qn
42.70.Jk
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Published: 01 November 1998
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| PACS: |
42.65.An
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(Optical susceptibility, hyperpolarizability)
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78.66.Qn
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(Polymers; organic compounds)
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42.70.Jk
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(Polymers and organics)
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