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Proceedings Paper

Second-harmonic spectroscopy of the ferroelectric antiferromagnet YMnO3
Author(s): V. V. Pavlov; R. V. Pisarev; Dietmar H. Froehlich; St. Leute
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Paper Abstract

A coexistence of electric and magnetic order in hexagonal YMnO3 gives rise to an unusual nonlinear optical polarization P(2(omega) ) which contains two contributions defined by the two order parameters. The two contributions overlap over a wide frequency range thus opening up new possibilities to study the electronic structure of crystals. The magnitude and phase of P(2(omega) ) can be changed by varying the ratio between the two contributions. We show that 180 degree ferroelectric and antiferromagnetic domains, which are indistinguishable in linear optics, can be visualized with a high contrast using the second harmonic light.

Paper Details

Date Published: 5 February 1999
PDF: 9 pages
Proc. SPIE 3732, ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, (5 February 1999); doi: 10.1117/12.339995
Show Author Affiliations
V. V. Pavlov, A.F. Ioffe Physical-Technical Institute (Russia)
R. V. Pisarev, A.F. Ioffe Physical-Technical Institute (Russia)
Dietmar H. Froehlich, Univ. Dortmund (Germany)
St. Leute, Univ. Dortmund (Germany)


Published in SPIE Proceedings Vol. 3732:
ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine
Andrey Yuri Chikishev; Victor N. Zadkov; Alexei M. Zheltikov, Editor(s)

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