Recording of holographic gratings in z-cut LiNbO3 waveguides with extraordinarily (TM) polarized light is demonstrated. In this geometry, photovoltaic currents perpendicular to the guiding layer and the grating vector set up space-charge fields. The mechanism has no equivalent in bulk material.
© 1995 Optical Society of America
Original Manuscript: January 3, 1995
Published: May 15, 1995
D. Kip, F. Rickermann, and E. Krätzig, "Photorefractive recording by a special mechanism in planar LiNbO3 waveguides," Opt. Lett. 20, 1139-1141 (1995)