The MT80-B30A1,5-IR from AA Opto Electronic is a Acousto-Optic Frequency Shifter with Optical Wavelength 700 to 1100 nm, Frequency Shift ±80 MHz, Acoustic Velocity 4200 m/s, RF Power 2.2 W, Center Frequency 80 ±15 MHz. More details for MT80-B30A1,5-IR can be seen below.