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Engineering two-dimensional nonlinear photonic quasi-crystals

Summary: Engineering two-dimensional nonlinear photonic
Alon Bahabad,* Ayelet Ganany-Padowicz, and Ady Arie
Department of Physical Electronics, Fleischman Faculty of Engineering, Tel-Aviv University, Tel Aviv 69978, Israel
*Corresponding author: alonuria@gmail.com
Received January 17, 2008; revised April 15, 2008; accepted April 15, 2008;
posted May 21, 2008 (Doc. ID 91511); published June 13, 2008
A known algorithm for modeling quasi-periodic lattices is used to generate two-dimensional quadratic non-
linear photonic quasi-crystals containing a set of desired discrete spectral components. This allows us to
fabricate optical devices in which an arbitrary set of nonlinear optical processes can be efficient. We dem-
onstrate this capability by fabricating two devices: a multidirectional single-frequency doubler and a mul-
tidirectional, multifrequency doubler that is capable of nearly collinear doubling of cw radiation in the op-
tical communication C band 15301570 nm through angle tuning. 2008 Optical Society of America
OCIS codes: 190.0190, 190.2620, 190.4223.
Often, a nonlinear optical process involving more
than one frequency is inefficient, owing to material
dispersion, causing the interacting beams to propa-
gate with different velocities and so be out of phase
with each other (phase mismatch). A flexible remedy
known as quasi-phase matching (QPM) [1], uses spa-


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


Collections: Engineering