Agile RF Synthesizer (XRF)

The MOGLabs XRF RF synthesizer is an agile RF source with the unique capability of fast (10MHz) analogue modulation of frequency, amplitude and phase.  It can be used as a simple self-contained AOM driver, or as an optical noise eater with analogue input and built-in PID feedback.

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 – 400MHz with output power up to 3 watts (+35dBm). 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 with 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 0.23Hz, 0.2mW and 0.4mrad (0.02°) resolution in time intervals as short as 16ns. 16 digital input/output signals can be individually controlled in synchronisation with the DDS sequences.

The XRF uses 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.

Main Features:

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

Diamond NV quantum control
PID control for for intensity stabilisation or laser frequency lock
Laser frequency stabilisation
Linewidth narrowing
Optical cavity locking
Beatnote offset locking
Quantum optics: squeezed light
Electromagnetic transparency and slow light
Time and frequency standards
Laser spectroscopy
Physics teaching labs