Acousto-Optic Tunable Filters (AOTF) from CASTECH are solid-state devices designed for accurate and fast wavelength selection in optical systems. These filters utilize the diffraction of light by acoustic waves to dynamically adjust the wavelength passing through the filter. By electronically addressing the filter, specific wavelengths can be selected from a broad spectral range with high precision and speed.

CASTECH's AOTF products are engineered using TeO2 slow shear waves, leveraging optimal material properties to achieve superior performance across wavelengths ranging from 400 to 1450 nm. These filters boast resolutions as fine as 3 nm and support effective apertures up to 10 mm. Typically configured in a non-collinear structure, AOTFs diffract randomly polarized input light into orthogonal polarizations matching specific ultrasonic frequencies, ensuring versatile application capabilities including fiber-coupling options.

For optimal performance, CASTECH recommends using their RF drivers, available in fixed-frequency and variable-frequency series, to drive the AOTF effectively.

Key Features:

• Dynamic Wavelength Selection: Electronically adjusts and selects specific wavelengths in real-time.
• High Resolution: Achieves resolutions as low as 3 nm.
• Wide Operating Range: Covers wavelengths from 400 to 1450 nm.
• Efficient Light Management: Non-collinear structure supports fiber-coupling.
• Versatile Applications: Suitable for spectral polarization, hyperspectral imaging, optical communication, laser wavelength tuning, and more.
• RF Driver Compatibility: Enhances performance with CASTECH's RF drivers.

Technical Specifications:

• Operating Wavelength: 400 - 1450 nm
• Resolution: As low as 3 nm
• Material: TeO2 slow shear waves
• Aperture: Up to 10 mm effective aperture
• Structure: Non-collinear, random polarization diffraction

Applications:

• Spectral Polarization
• Hyperspectral Imaging
• Wavelength Selection
• Optical Communication
• Laser Wavelength Tuning

Customization and Availability:

CASTECH produces AOTFs independently, offering customization options to meet specific customer requirements. Standard products are available for immediate reference and deployment.

Experience the precision and versatility of CASTECH's Acousto-Optic Tunable Filters, designed for dynamic wavelength selection and optimal performance in advanced optical applications.