MODELING AND SCALING OF CHIELECTRIC RELAXATION OF NONLINEAR OPTICAL POLYMERS IN FREQUENCY DOMAIN

doi:10.1088/1004-423X/8/11/006

Abstract

Abstract chielectric relaxation theory was demonstrated, chielectric relaxation that selectively probes chromophore reorientation in the frequency domain was described by the Havriliak Negami(HN) function, chielectric spectra of several nonlinear optical (NLO) polymers were fitted well by the HN function. To describe the scaling of chromophore reorientation relaxation in frequency domain, two-shape parameters m and n describing the low- and high- frequency wings of the chielectric spectra need to be specified, besides the chielectric characteristic relaxation time τ and the chielectric strength $\Delta \chi$⁽²⁾. From the temperature dependences of m and n of NLO polymers, the relations between the chromophore relaxation and the $\alpha$ relaxation of the polymer host have been revealed.

Received: 02 January 1999
Revised: 07 March 1999
Accepted manuscript online:

PACS:	42.70.Jk	(Polymers and organics)
	42.65.An	(Optical susceptibility, hyperpolarizability)
	42.65.Ky	(Frequency conversion; harmonic generation, including higher-order harmonic generation)

Fund: Supported by the National Natural Science Foundation of China(69990540).

Cite this article:

SHI WEI (史伟), FANG CHANG-SHUI (房昌水), PAN QI-WEI (潘奇伟), SUN XUN (孙洵), GU QING-TIAN (顾庆天), XU DONG (许东) MODELING AND SCALING OF CHIELECTRIC RELAXATION OF NONLINEAR OPTICAL POLYMERS IN FREQUENCY DOMAIN 1999 Acta Physica Sinica (Overseas Edition) 8 831

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MODELING AND SCALING OF CHIELECTRIC RELAXATION OF NONLINEAR OPTICAL POLYMERS IN FREQUENCY DOMAIN

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