AO Frequency Shifters0 pages

Sintec Optronics Technology Pte Ltd
10 Bukit Batok Crescent #07-02 The Spire Singapore 658079
Tel: +65 63167112 Fax: +65 63167113

Acousto-Optic Frequency-Shifter
An AO Frequency Shifter (AOFS) is a device that modifies the frequency of the optical beam. This is a
consequence of the Doppler effect; the travelling acoustic wave causing the frequency of the optical beam to be
either increased or decreased by an amount equal to the RF carrier frequency. Since the RF frequency is
typically of the order of tens or hundreds of Megahertz, and the optical frequency is typically of the order of
1014Hz, the frequency shift is relatively small and would not normally be perceivable, for example as a visible
change in colour.
Utilising a wide range of materials including Crystal Quartz, Fused Silica, Tellurium Dioxide, Lead Molybdate,
Chalcogenide Glass, Gallium Phosphate, Silicon and Germanium allows us to offer devices operating in the
wavelength range 244 to 15000nm and RF frequencies ranging from <20MHz to >1GHz. We also manufacture
a range of RF drivers including; single frequency, tunable frequency (VCO or DFS) and dual frequency master /
slave.
Typical applications include Interferometry, vibrometry & atom cooling.
Frequency Shift
Frequency Drift / ºC
Wavelength
Interaction Material
Acoustic Mode
AR Coating Reflectivity
Transmission

FS040-2C-AR1
40MHz

FS040-2E-AR1
40MHz

532nm
Tellurium Dioxide
Anisotropic, slow shear
< 0.2% per surface
> 95% @ 532nm

Clear Aperture

4x2.0mm (horizontal and vertical)

Active Aperture

1·5mm (vertical)
Linear and horizontal with respect
housing
Linear and orthogonal to input

630-690nm
Tellurium Dioxide
Anisotropic, slow shear
< 0·3% per surface
> 95% @ 532nm
4x2·0mm (horizontal and
vertical)
1·5mm (vertical)
Linear; horizontal with respect
housing
Linear and orthogonal to input

FS040-2E-ME1
40MHz
< ±10ppm
630-690nm
Tellurium Dioxide
Anisotropic, slow shear
< 0.2% per surface
> 95%
4x2mm (horizontal and
vertical)
1.5mm (vertical)
Linear & horizontal in respect
to housing
Linear & orthogonal to input

>100:1

>100:1

>100:1

Symmetrical to the left and right of
the straight through direction ±0·5º

Symmetrical to the left and
right of the straight through

Symmetrical to the left and
right of the straight through

Polarisation (input)
Polarisation (output 1st order)
0/1st Order Polarisation
Extinction Ratio
Zero and 1st Order Beam
Symmetry
http://www.SintecOptronics.com

http://www.SintecOptronics.com.sg

Tel: +65 63167112

Fax: +65 63167113

FS110-8M-DS3
110MHz
1900-2100nm
Chalcogenide Glass
≤ 0·4% per surface
≥ 95%
2·0mm
Any

1