The MT80-A0,4-2000 from AA Opto Electronic is a Acousto-Optic Modulator with Operating Temperature 10 to 40 Degree C, Storage Temperature -20 to 50 Degree C, Modulation Bandwidth 15 MHz, Rise Time 32 to 48 ns, Optical Wavelength 1900 to 2100 nm. More details for MT80-A0,4-2000 can be seen below.