Free Space Acousto-Optic Tunable Filters (AOTF)

The Brimrose Free Space Acousto-Optic Tunable Filter (AOTF) is a solid state acousto-optic device with no moving parts. It functions as a tunable transmissive filter. It is able to precisely and rapidly adjust the wavelength, and intensity of the diffracted/filtered light by varying the RF power.

Brimrose offers both standard and custom AOTFs. AOTFs are used widely in numerous optical systems and applications, especially in industrial or process control near-infrared (NIR) spectroscopy applications.

Key Features

• All Rugged, Solid State

• No Moving Parts – Immune to vibrations

• Use with Multiple Laser Lines Simultaneously

• Wide Spectral Wavelength Range

• Fast Switching Speed

• Low Sensitivity to Input Angle

• High Optical Throughput

• Auto Calibration between Each Measurement

• Custom Configurations Available

• Ideal for Real-Time NIR

Applications

• Spectrophotometry Monochromation
• Florescence Analysis, Transmission
• Laser Displays

• Process Control

• Confocal Microscopy
• Polarimetric Hyperspectral Imagery (the AOTF is inserted in the imagery system)
• Other OEM Applications

Technical Specifications

* Available in low or standard resolution.

Brimrose's AOTF technology uses a Tellurium Dioxide (TeO2) crystal. The AOTF operates in the NIR region in a so-called non-collinear configuration. The acoustic and optical waves propagate at quite different angles through the crystal.
Material: TE – Tellerium Dioxide (350-5000 nm) QZ – Quartz (SiO2)
Options:
S – Standard Resolution
H – High Resolution
EH – Extra high Resolution
UH – Ultra high Resolution