Highly sensitive cw and transient polarization spectroscopy of photoexcited states in nanopolyacetylene

N. V. Chigarev; V. A. Ruilova-Zavgorodnii; Dmitri Yu. Paraschuk; Valerii M. Kobryanskii

doi:10.1117/12.428342

30 May 2001 Highly sensitive cw and transient polarization spectroscopy of photoexcited states in nanopolyacetylene

N. V. Chigarev, V. A. Ruilova-Zavgorodnii, Dmitri Yu. Paraschuk, Valerii M. Kobryanskii

Proceedings Volume 4429, International Seminar on Novel Trends in Nonlinear Laser Spectroscopy and High-Precision Measurements in Optics; (2001) https://doi.org/10.1117/12.428342
Event: International Seminar on Novel Trends in Nonlinear Laser Spectroscopy and High-Precision Measurements in Optics, 2000, Vladimir/Suzdal, Russian Federation

Abstract

A highly sensitive photoinduced polarimetry method was applied to probe optical anisotropy of the photoexcited states in non-oriented films of nano-polyacetylene. The photoinduced absorption anisotropy was observed in both cw and transient polarization experiments. The photoinduced dichroism parameter of the nano-polyacetylene films, (mu) equals (forula available in paper) was measured on the sub-nanosecond time scale ((mu) approximately equals 1) and on the millisecond time scale ((mu) approximately equals (formula available in paper) are the absorption indexes of the linear polarized probe polarized along and across the linear polarized pump, correspondingly. We discuss delocalization of (pi) electrons in the photoexcited states of trans-nano-polyacetylene chains.

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N. V. Chigarev, V. A. Ruilova-Zavgorodnii, Dmitri Yu. Paraschuk, and Valerii M. Kobryanskii "Highly sensitive cw and transient polarization spectroscopy of photoexcited states in nanopolyacetylene", Proc. SPIE 4429, International Seminar on Novel Trends in Nonlinear Laser Spectroscopy and High-Precision Measurements in Optics, (30 May 2001); https://doi.org/10.1117/12.428342

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