Key Features
- Compact, efficient design for frequency shifting of optical beams.
- Supports frequency shifts from 20 MHz to 300 MHz with high precision.
- Utilizes high-performance Tellurium Oxide (TeO2) for superior acoustic and optical properties.
- Low insertion loss and high damage threshold for reliable operation.
- Customizable options for center frequency, frequency shift range, and RF driver integration.
General Description
Acousto-Optic Frequency Shifters (AOFS) are highly efficient devices designed to alter the frequency of optical beams. By superimposing ultrasonic frequencies via RF signals, the devices achieve precise frequency shifts, allowing for versatile optical system applications.
The laser beam passing through an AOFS is diffracted, and the output beam is frequency-shifted depending on the angle of incidence and RF signal. AOFS units can also be cascaded to produce sum or difference frequency combinations, providing greater flexibility. POC AOFS units support frequency shifts ranging from 20 MHz to 300 MHz, with bicrystal devices available for extended range and customization.
These frequency shifters are constructed using high-quality Tellurium Oxide (TeO2), a material known for its exceptional acoustic and optical performance. This ensures the lowest possible insertion loss, a high damage threshold, and robust reliability for demanding applications.
POC also offers matched RF drivers and inverter drivers to maximize device performance, ensuring seamless integration into user systems. The combination of innovative design and customizable options makes POC AOFS devices the preferred choice for cutting-edge optical applications.
General Applications and Examples
- Interferometry
AOFS units are used in interferometric systems to introduce precise frequency shifts in light beams, enabling high-resolution measurements in research and industrial applications. - Laser Doppler Velocimetry
Frequency shifters allow accurate measurement of fluid or particle velocities by introducing controlled frequency shifts in Doppler-based systems. - Optical Heterodyne Detection
AOFS units facilitate optical frequency mixing for signal analysis, improving detection sensitivity and resolution in heterodyne systems. - Laser Cooling
Frequency-shifted laser beams enable precise manipulation of atomic and molecular motion, making AOFS critical in experimental physics setups.
Our Standard Products and Model Numbers
| Model Type | Center Frequency (MHz) | RF Range (MHz) | Aperture (mm) | Material | Mode | Frequency Mode | Fiber Type | Fiber Termination | Wavelength (nm) | RF Connector | Housing |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Free-Space Frequency | 70 | 10 ±10 | 1 | CQ / TE | C / S | Beat / Sum | – | – | 633 | SMA-F | A17 |
| Fiber-Coupled Frequency | 70 | 10 ±10 | 1 | CQ / TE | C / S | Beat / Sum | HI1060 | Bare / FC/APC | 633 | SMA-F | A61 |
Typical Specifications
| Wavelength (nm) | Active Aperture (mm) | Operating Frequency (MHz) | Material |
|---|---|---|---|
| 355–532 | 1–3 | 110 | CQ |
| 532 | 2 | 80 | TE |
| 633 | 1–3 | 20 | TE |
| 1064 | 1 | 70 ±15 | TE |
| 1550 | 1–1.5 | 110 ±10 / 80 | TE |
Housing Dimensions (mm)
- A17: 65.7 x 40.5 x 25.1 mm, optimized for compact setups with high integration flexibility.
- A61: 98.2 x 67 x 36 mm, suited for larger, high-power configurations.
