Observation of χ(2) gratings in polydiacetylenus: bulk monocrystalline PTS and Langmuir-Blodgett films of 11/8-acid

A.N. Chudinov; A. M. Barabash; A.M. Kotegov; A.A. Postnikov; B.Ya. Zel’dovich

doi:10.1364/OTFA.1993.WD.29

Organic Thin Films for Photonic Applications
Technical Digest Series (Optica Publishing Group, 1993),
paper WD.29
•https://doi.org/10.1364/OTFA.1993.WD.29

Observation of χ⁽²⁾ gratings in polydiacetylenus: bulk monocrystalline PTS and Langmuir-Blodgett films of 11/8-acid

A.N. Chudinov, A. M. Barabash, A.M. Kotegov, A.A. Postnikov, and B.Ya. Zel’dovich

Organic Thin Films for Photonic Applications 1993

Ontario Canada
5–7 October 1993
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A. N. Chudinov, A. M. Barabash, A. M. Kotegov, A. A. Postnikov, and B. Y. Zel’dovich, "Observation of χ(2) gratings in polydiacetylenus: bulk monocrystalline PTS and Langmuir-Blodgett films of 11/8-acid," in Organic Thin Films for Photonic Applications, Technical Digest Series (Optica Publishing Group, 1993), paper WD.29.

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Abstract

Optical field 1/2 (E_ω(r)exp(-iωt) + E_2ω(r)exp(-i2ωt) + k.c.) posesses polar asymmetry in a point r. In particular, the average value of the cube of this field is nonzero. There are numerous effects of interaction of such a field with matter, eg. writting of a holographic gratings of the 2-nd order polarizability χ⁽²⁾ in fibers and bulk glasses, phase-sensitive interference effects in multiphoton ionization [1], dynamic χ⁽²⁾ grating in a solution of 4-BCMU polydiacetylene (PDA) [2]

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