Accousto Optics Modulators

We offer a wide range of standard Accousto Optics Modulators, for digital or analogue intensity modulation of laser beams. Their main specifications are as follows:

* Wavelength Range: 240nm to 2100nm
* Drive Frequencies: 20MHz to 350MHz
* Optical Rise-Times: Down to 5ns
* Modulation Bandwidths: Up to 100MHz
* Interaction Materials: Tellurium Dioxide, Lead Molybdate, Fused Silica, Crystal Quartz, halcogenide Glass, Flint Glass.

provides the electronic signal operating the AO Modulator. With a digital driver, an external TTL signal enables rapid on and off switching of the optical beam. Alternatively an anologue driver enables a variable intensity output, typically from 0% to 85% of the input beam. The maximum modulation bandwidth, or optical rise-time, is a function of the acoustic transit time across the optical beam. Therefore, for the highest speeds it is often necessary to focus the optical beam down to a small spot inside the modulator.