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Electron-beam-induced domain poling in LiNbO3 for two-dimensional nonlinear frequency conversion

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-


Source: Arie, Ady - Department of Electrical Engineering-Physical Electronics, Tel Aviv University


Collections: Engineering