Acousto-Optic Frequency Shifters 1064nm Free-space AOFS

 Acousto-Optic Frequency Shifters 1064nm Free-space AOFS

The acousto-optic Frequency Shifter (AOFS) with RF driver is used to modify the frequency of the optical beam. Due to the Doppler shift, the frequency shift of 1st order diffracted light (variation quantity of wavelength) equals to the frequency of acoustic (wavelength) after the AO frequency shifters. If the incident direction of acoustic wave and optical wave are the same, the laser frequency shifts will be the positive value, anyway if the incident direction are opposite, the value of the laser frequency shifts will be the negative value.

Applications such as interference-based optical techniques require a high extinction ratio between the diffracted and undiffracted beam; This can be achieved with a high-quality optical finish to minimize optical scatter.

We offer standard products with frequency shifts of 73 MHz In addition, also provide the services of customize for center frequency and the value of frequency shifts.

Applications：

Interferometry
Laser cooling
Laser Doppler velocimetry
Optical heterodyne detection

Interaction material TeO2
Wavelength 1064 nm or other
Damage threshold>1 GW/cm²
AR coating reflection<0.2 % per surface Transmission(Single pass)>97 %
RF frequency70/73/83 MHz or other
Frequency shift bandwidth : +-1,+-3,+-8MHz or other
Polarization Linear, vertical to base
Aperture 1.0 mm or other
Acoustic mode Compressional
Rise time<120 ns/mm Diffraction angle 17.7,18.5,21.0 mrad or other Diffraction efficiency>70 %
RF power 2 W (max)
RF connector SMA-F
Cooling Conduction-cooled
Shell material Aluminum alloy 6061

DFB laser BeamQ

 DFB laser

A DFB Laser (distributed feedback laser) is a type of laser diode, quantum cascade laser or optical fiber laser. The active region of the DFB Laser contains a periodically structured element or diffraction grating.

The structure builds a one-dimensional interference grating (Bragg scattering) and the grating provides optical feedback for the laser.

DFB lasers tend to be much more stable than Fabry-Perot or DBR lasers and are used frequently when clean single mode operation is needed, especially in high speed fiber optic telecommunications. Semiconductor DFB lasers in the lowest loss window of optical fibers at about 1.55um wavelength, amplified by Erbium-doped fiber amplifiers , dominate the long distance communication market, while DFB lasers in the lowest dispersion window at 1.3um are used at shorter distances.

1550nm DFB laser photodiode coaxial pigtail types package FC/APC SC/APC

Certification: CE

Origin: CN(Origin)

Fiber Type: Single Mode

Connector Type: FC/APC

Model Number: DFB-1550nm

Item: DFB laser photodiode

wavelength: 1550nm

color: randomly:yellow,white or blue

Qty: 1pc