Agile RF synthesizer

Agile RF synthesizer

The MOGLabs ARF and XRF AOM drivers provide two channels of agile RF digital frequency synthesis, with optional high-power amplifiers. Includes built-in high-bandwidth AM/FM/PM as well as a PID feedback servo for use as an optical noise eater. Build upon a high-speed FPGA controlling AD9910 DDS cores, and uses a separate microcontroller for simple communication and control.

The device provides two channels of agile RF frequency synthesis with optional high-power RF amplifiers built-in. Each channel spans a frequency range of 20 – 400 MHz with output power up to 4 watts ( 36dBm). The two channels can be used as simple manually controllable AOM drivers via front panel knobs to adjust frequency and output power, simultaneous FM and AM (or PM) modulation at up to 10MHz bandwidth, and servo feedback built-in for laser noise-eating or frequency locking.

The computer interface (10/100 ethernet and USB) allows full control of all parameters, including loading of FM, AM and PM data for triggered or looped playback. Fast frequency chirps or complex waveforms can be defined with 0.23 Hz, 0.2 mW and 0.4 mrad (0.02°) in time intervals as short as 16 ns (XRF). 16 digital input/output signals can be individually controlled in synchronisation with the DDS sequences.

The ARF and XRF use a fast FPGA to drive two AD9910 DDS cores. Communications are handled by two separate microcontrollers. FM, AM and PM sequences can be incredibly complex using interpolation, repeats, loops, ramps, and external triggers.

Optional extras: SMA breakout panel for 16-channel digital I/O, and analogue signal conditioning for noise eater and laser frequency lock applications.

Features

  • PID control for intensity stabilisation or laser frequency lock
  • High output power: 2 x 4 W per channel (421 model)
  • Wide frequency range: 20 – 400 MHz
  • High single-channel modulation bandwidth: 10 MHz
  • 16 independent digital outputs
  • Table mode for complicated sequencing
  • External and internal synchronisation options
  • Robust open- and short-circuit protection
  • FPGA architecture for extreme flexibility
  • Fast RF off from TTL (<40ns)
  • Extremely low phase noise
  • Complete package: run from 100-250 Vac, 50/60 Hz

Datasheet

Agile RF synthesizer

Applications

This product could be used for the following applications:

  • Diamond NV quantum control
  • Laser cooling and trapping
  • Bose-Einstein condensation
  • Quantum optics: squeezed light
  • Electromagnetic transparency and slow light
  • Time and frequency standards
  • Laser spectroscopy
  • Physics teaching labs

Manufacturer

This product is manufactured by MOGLabs.

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