Optical Modulators

Free Space Acousto-Optic Modulators/Shifter UV 111MHz

The AOMS series fiberoptic acousto-optic modulators enable high-speed optical intensity modulation optimized for UV wavelengths. Built with high-purity quartz, they feature low insertion loss, a high UV damage threshold, and fast switching. When driven at the 111 MHz resonance frequency, the device satisfies the Bragg diffraction condition, deflecting light at a specific angle. Intensity is controlled by varying the RF drive amplitude (0–5 V via SMA input). The modulator inherently introduces a positive frequency shift, with negative shift versions available upon request. It operates over a narrow wavelength range, with the output angle dependent on the input wavelength. A matching driver is available.