The MT80-B30A1.5-VIS from AA Opto Electronic is a Acousto-Optic Frequency Shifter with Optical Wavelength 450 to 700 nm, Frequency Shift ±80 MHz, Acoustic Velocity 4200 m/s, RF Power <1 W, Center Frequency 80 ±15 MHz. More details for MT80-B30A1.5-VIS can be seen below.