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Summary: Electron-beam-induced domain poling in LiNbO3 for two-dimensional
nonlinear frequency conversion
Yinnon Glickman, Emil Winebrand, Ady Arie,a
and Gil Rosenman
Department of Physical Electronics, School of Electrical Engineering, Tel-Aviv University,
Tel-Aviv, Israel 69978
Received 16 June 2005; accepted 4 November 2005; published online 3 January 2006
A bulk of LiNbO3 was periodically poled in two dimensions to achieve noncollinear
second-harmonic generation. The sample was fabricated using an electron-beam indirect exposure.
This method used a dielectric buffer layer deposited on LiNbO3 Z-
-polar face to trap the incident
electrons. These localized electrons formed a charge droplet which generated a strong electric field
and triggered the domain inversion process in the LiNbO3. Tailored two-dimensional domain
configurations enabled quasi-phase-matched frequency doubling of a Nd:YLF laser at 15 different
input angles. The measured angular dependence was in agreement with calculations based on the
nonlinear reciprocal lattice vectors of the poled structure. © 2006 American Institute of Physics.
DOI: 10.1063/1.2159089
Several techniques have been studied in recent years to
obtain periodic domain inversion in ferroelectric crystals,
mainly for nonlinear quasi-phase-matched frequency conver-
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