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Optica Publishing Group
  • Quantum Electronics and Laser Science Conference
  • OSA Technical Digest (Optica Publishing Group, 1996),
  • paper JTuG6

Large second harmonic generation with in-plane anistrophy induced by photoassisted poling in azobenzene containing polymer films

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Abstract

It has recently been demonstrated1-3 that photoassisted poling (PAP) of azobenzene containing polymers films at room temperature is possible. This poling method utilizes photoinduced trans-ds- trans isomerization4 of azobenzene groups. By application of a dc electric field during the photoisomerization process, the centrosymmetry in the films is broken at room temperature and the second-order nonlinear optical (NLO) susceptibility is induced. Our recent studies using the PAP on an azobenzene containing polymer indicate that large second harmonic generation (SHG) with in-plane anisotropy is induced by irradiating the sample with p-polarized laser beam at an inddent angle other than zero degree. To our knowledge, it is the first time this behavior has been reported.

© 1996 Optical Society of America

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