Introduction: Acousto-optic frequency shifters (AOFS) are advanced devices designed to achieve frequency shifts in optical signals. These compact devices work by directing a laser beam through acousto-optic materials, resulting in a frequency shift of the diffracted output beam. By adjusting the angle of incidence and the applied RF signal, AOFS can shift the frequency up or down. Multiple AOFS devices can be cascaded to achieve sum or difference frequency combinations.

Key Features:

• Frequency Shifts: Standard products offer shifts ranging from 20-300 MHz.
• Material Excellence: Utilizes high-quality Tellurium Oxide (TeO2), grown and polished in-house at CASTECH, ensuring minimal insertion loss and high damage threshold.
• Customization: Tailor specifications including center frequency and shifted frequency value to meet specific needs.
• Compatibility: Foxchip provides AOFS-matched RF inverter drivers, with options available based on product specifications.

Applications:

• Interferometry: Enhances measurement precision and signal processing.
• Laser Cooling: Facilitates control of laser cooling processes.
• Laser Doppler Velocimetry: Improves velocity measurement accuracy.
• Optical Heterodyne Detection: Assists in detecting and analyzing optical signals.

Customization and Production: CASTECH's products are fully produced in-house and can be customized according to customer requirements. Our standard products cover a broad range of applications, and we offer tailored solutions to fit specific needs.

Contact Us: For more information or to request a quote, please contact our sales team. Discover how CASTECH’s acousto-optic frequency shifters can enhance your optical and laser systems.