DFC SDL
Frequency-comb-stabilized laser system
• Rack-mounted • Complete, stabilized laser systems
• Up to 8 cw-outputs between 420 - 2200 nm • One central software
Transportable
TOPTICA's offset-free frequency comb DFC (Difference Frequency Comb) and tunable cw diode lasers (DL pro) can be combined into easy-to-use laser systems delivering frequency-stable cw-output at any wavelength between 420 nm and 2200 nm. A complete laser system contains a DFC CORE, wavelength extensions (DFC EXT), cw diode lasers (DL pro), beat units (DFC BC, DFC MD), all necessary stabilization electronics, a wavelength meter (High Finesse), RF-reference, counter, spectrum analyzer, control server (PC) and user software.
All these components can now be integrated into a single transportable 19-inch rack. The standard system comes with two frequency stable cw-outputs and all required accessories. The control software runs on an integrated PC acting as server, it can be operated remotely using the client GUI. The laser frequencies can be set manually within the comb extension and DL pro bandwidth and are displayed live by the software.
Specifications
Laser outputs*
2 cw outputs between 420 nm and 2200 nm
Power
Depends on DL pro specifications, typ. 10 .. 300 mW before isolator
Linewidth
typ. < 100 kHz, e.g. 75 kHz @ 633 nm**
Output coupling
Polarization maintaining fiber (FC/APC)
Stability
Same as reference, < 5·10-13 /24 h with GPS module, typ. < 1·10-15 in 1 s with opt. Reference
Dimensions (H x W x D)*
182 x 55.3 x 80 cm
Power supply
100...120 V / 220...240 VAC, 50...60 Hz (auto detect)
* up to 8 cw outputs in up to 3 racks with equal dimensions ** Beat width DFC vs. 3 kHz HeNe in 5 ms
Key Features Software
• Central GUI for all modules • Push-button start of DFC CORE / DFC EXT • Beat monitoring with cw lock status
• Automatic data log • Automatic calculation of Allan deviation • Laser frequency trace and statistic • Remote control
Components
1x DFC CORE
Low-noise fCEO-free frequency comb: 4/8 outputs @ 1560 nm, frep = 80 MHz, Bandwidth > 20 nm, Power > 10 mW
1x DFC EXT*
Wavelength extension: 3 outputs between 420 and 2200 nm in one 19 inch box
1x DL DFC**
2 x DL pro with output between 420 and 2200 nm, 2 x beat units DFC BC, DFC MD
1x DLC pro
Digital Laser Controller, drives 2 x DL pro
RF Reference
Low-noise OCXO and GPS module, other references on request
Locking Electronics
All electronics for phase-locking DFC CORE to RF-reference and 2 DL pro to DFC CORE/DFC EXT
Counter
RF counter for counting rf-beats
Spectrum Analyser
4 channel digital oscilloscope with FFT for beat monitoring
Wavelength Meter with Switch
Comb line order determination, 2-8 channels
PC
Server for laser system control
User Software
Single software interface for all components, remote access
* up to 3 DFC EXT in one system ** up to 4 DL DFC in one system