Three-photon enhanced optical nonlinearity of poly(3-butylthiophene)

H. J. Byrne; W. Blau; Kwan Yue Jen

doi:10.1016/0379-6779(89)90845-X

Three-photon enhanced optical nonlinearity of poly(3-butylthiophene)

H. J. Byrne, W. Blau, Kwan Yue Jen

Research output: Contribution to journal › Article › peer-review

Abstract

Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l^-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated.

Original language	English
Pages (from-to)	229-235
Number of pages	7
Journal	Synthetic Metals
Volume	32
Issue number	2
DOIs	https://doi.org/10.1016/0379-6779(89)90845-X
Publication status	Published - 13 Oct 1989
Externally published	Yes

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abstract = "Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated.",

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AU - Blau, W.

AU - Jen, Kwan Yue

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Y1 - 1989/10/13

N2 - Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated.

AB - Investigations of the optical nonlinearity, by Degenerate Forward Four-wave Mixing at 1.064 μm, in the soluble conjugated polymer poly(3-butylthiophene) are reported. Transient grating response times are limited by the laser pulse width of 70 ps. Measurement of the diffraction efficiency as a function of polymer concentration reveals contributions from both real and imaginary terms. Intensity dependences for concentrations in the range 0.1 - 1.0 g l-1 are found to be characteristics of an eight-photon mixing process, indicating a three-photon resonance enhancement of the nonlinearity. Values of the seventh-order microscopic susceptibilities are calculated.

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VL - 32

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JO - Synthetic Metals

JF - Synthetic Metals

IS - 2

ER -

Three-photon enhanced optical nonlinearity of poly(3-butylthiophene)

Abstract

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