High-coupling leaky surface acoustic waves on LiNbO 3 or LiTaO 3 thin plate bonded to high-velocity substrate Masashi Gomi, Takuya Kataoka, Junki Hayashi et al. -This content was downloaded from IP address 207.241.231. In this study, to increase the amount of frequency shift by adopting a longitudinal leaky surface acoustic wave (LLSAW) with a higher phase velocity than a Rayleigh-type SAW to a waveguide-type acousto-optic Bragg deflector, a Ti-diffused optical waveguide was fabricated on an

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... ut 36°Y-propagating LiNbO 3 substrate with a high electromechanical coupling factor for the LLSAW and its diffraction properties were evaluated. The diffraction of the guided light by the LLSAW was observed for the first time. The diffraction efficiency in the TE 0 mode was approximately 50% for an optical wavelength of 0.633 µm.