The M1250-T150L-0p5 from ISOMET is a Acousto-Optic Modulator with Modulation Bandwidth 5 to 8.7 MHz, Rise Time 39 to 77 ns, Optical Wavelength 1550 nm, Optical Power 1.3 W, Center Frequency 150 MHz. More details for M1250-T150L-0p5 can be seen below.