Ultrafast Pulse Diagnostics

Pulse Management

Wavelength Conversion

Acousto-optics

DFD sheme

DFD
Data Sheet

The acousto-optical dual frequency shifter DFD-40/80 is a device for shifting the frequency of laser light. It is based on the acousto-optical effect. The DFD-40/80 has two channels driven by the same master clock oscillator, hence they are phase-locked but the frequency and amplitude can be individually adjusted. This makes the DFD-40/80 the ideal source for heterodyne experiments. It consists of the RF-driver electronics and two acousto-optical modulator elements.

Features
  • Complete instrument with driver electronics and modulators
  • Two phase-locked, independently adjustable output channels
  • Quarz stable oscillator
  • RF-safety circuit to avoid damage by overload
  • Microprocessor control
Specifications
DFD-40
DFD-80
Frequency channel 1 (f1)
35 ... 45 MHz
70 ... 90 MHz
Frequency channel 2 (f2)
35 ... 45 MHz
70 ... 90 MHz
Resolution
10 kHz2)
Stability
10 ppm2)
Amplitude control
Independent for each channel
digitally set at front panel
RF output power
< 1 W @ 50 Ω each channel1)
Modulation input 1/2
Digital (on/off): TTL, 600 Ω, 100 kHz max.2)
 
1) higher power on request
2) other parameters on request

 

 

 

 

 

 

 

 

Option
  • Analog modulation inputs (eg. 0 ... 5 V) instead of digital modulation inputs
Distributors
Great Britain and Ireland: Photonic Solutions
Japan: Phototechnica
USA, Canada: AP&E