Surface-acoustic-wave-driven acoustooptic modulator with wide wavelength range for visible laser light

Abstract

A surface-acoustic-wave-driven acoustooptic modulator was fabricated on 128° Y-cut LiNbO 3 for visible laser light. Peak diffraction efficiencies of 85, 82, and 47% were obtained for optical wavelengths of 633, 532, and 473 nm, respectively. 28 mm 1 2 m m 12 8 Y-X Li Nb O 3 PE waveguide Port 1 Port 2 Port 3 Port 4 Bending part IDT (Λ=16μm) 1 7 0 μ m L g =2 m m L g =1 m m 3 o r 6 μ m 1 μ m 0 . 5 m m