Optical Modulators

Amplitude/Phaser Electro-Optical Pockels Cell Modulator – Resonance

Our Free-space Electro-optic modulator (FEOM) in the resonant frequency is a electro-optical crystal based modulator which efficiently modify the phase, polarization or amplitude of a free-space laser. It is designed to be operated at a fixed frequency with narrow bandwidth. The resonance frequencies can be selected from 5 to 100 MHz. This resonant modulator can be conveniently driven by a standard laboratory function generator at the resonance frequency. Custom versions are also available, with user-specified resonant frequencies from 10 to 100 MHz and a variety of optical AR coatings. Our unique design minimum piezo-effect and charge building-up. The response is a sinusoidal wave shape for resonance devices. For amplitude modulation, polarized light is essential because the modulation process relies on controlling the intensity of light based on its polarization state.