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Schematics of guided mode diffraction from surface acoustic waves in -on-sapphire structure. SAW transducers: , transmitter; , receiver. Guided light beams: , input; , transmitted; , diffracted.
Transmission of IDT pair deposited on -on-sapphire structure.
Acousto-optic diffraction efficiency vs SAW power. Dots, experiment; lines, simulation. Optical wavelengths: closed circles and solid line, ; open circles and dashed line, .
SAW power required to attain maximum diffraction at given acoustic wavelength. Calculation: solid lines, ; dashed lines, . Dots, experiment. Calculated and measured powers were normalized to correspondent values for modes at acoustic wavelength .
Elasto-optic (Ref. 6) and electro-optic (Ref. 7) constants used for simulation of acousto-optic interaction in .
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