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DFC CORE / DFC CORE+

Compact low-noise Frequency Comb

  • Based on mode-locked Erbium fiber laser
  • Offset-free by difference frequency generation
  • Patented CERO (“zero-fCEO”) technology
  • CORE unit with 4 or 8 outputs at 1560 nm
  • Optional extensions for frequency conversion

See more in our product video:

 

  • DFC CORE
  • Specifications

    Specifications DFC CORE DFC CORE+
    Center wavelength 1560 nm (other wavelengths see DFC Extensions)
    Comb spacing 80 MHz
    Laser outputs 4 or 8, fiber coupled, polarization maintaining, FC/APC
    Bandwidth > 25 nm, each output
    Power > 10 mW, each output
    Integrated phase noise fCEO < 40 mrad [100 Hz - 2 MHz], < 65 mrad [70 mHz - 20 MHz]
    Reference DFC RF**, Low-noise oven-controlled quartz (OCXO) Optical reference** or DFC RF** (OCXO)
    Linewidth @ 1560 nm < 30 kHz, typ. 20 kHz (locked to DFC RF, free running) < 1 Hz (locked to optical reference)
    Bandwidth frep actuator > 70 kHz (Piezo) 10 MHz (Imod)
    Loop bandwidth frep lock 10 kHz, optimal with DFC RF > 400 kHz (typ. 450 kHz)
    Stability 1 · 10-13 in 1 s* 1 · 10-16 in 1 s*, 3 · 10-18 in 1000 s*
    Accuracy 1 · 10-14 in 100 s* 1 · 10-17 in 1000 s*
    Dimensions (H x W x D) 133 x 450 x 633 mm³, incl. electronics

    133 x 450 x 633 mm³

    Dimensions Electronics - FALC + PFD: 131 x 184 x 286 mm³
    Reference input 800 MHz, RF reference (DFC RF)
    • High bandwidth Imod (DC - 10 MHz) for optical reference
    • 800 MHz for RF reference (10 MHz with DFC RF)
    Cooling requirements Air cooled
    Power consumption < 100 W
    Operating temperature 21 ± 5 °C
    Weight < 30 kg
    Power supply 100...120 V / 220...240 VAC, 50...60 Hz (auto detect)
    Control computer Laptop, Windows 7 or 10, english
    * or same as reference, whichever applies first, ** not included
     

  • Options

    Options Model Descriptions
    Wavelength extension* DFC IR Centered @ 1560 nm, bandwidth > 80 nm, typ. 100 nm
    DFC NIR Centered @ 780 nm, bandwidth > 35 nm, typ. 40 nm
    DFC DVIS** Wavelength range 420 - 840 nm, bandwidth typ. 5 nm @ 698 nm, typ. 1 nm @ 420 nm
    DFC SCNIR** Wavelength range 840 - 980 nm, bandwidth > 50 nm, typ. 100 nm @ 935 nm
    DFC SCIR** Wavelength range 980 - 2200, bandwidth > 200 nm, typ. 300 nm centered @ 1200 nm
    Reference DFC RF Low-noise oven-controlled quartz, output: 800 MHz, input: 10 MHz
    DFC GPS GPS frequency reference, output: 10 MHz, stability: 1.3 · 10-12 @ 1s, 1 · 10-13 @ 40000 s
    Beat units
     
    DFC BC Beam combiner for DFC and cw-laser, fiber coupled
    DFC BCF Fiber beam combiner for DFC and cw-laser, 980 nm, 1030 nm, 1300 nm, 1550 nm
    DFC MD Monochromatic detector unit, fiber coupled, use with DFC BC / DFC BCF
    Locking electronics FALC Fast analog 2-channel PID
    PFD Phase frequency detector
    Accessories DFC SCOPE Digital oscilloscope with spectrum analyzer (FFT), for beat monitoring up to 4 beats
    DFC COUNT 4 channel counter
    HF-WS / DFC High Finesse wavelength meter, for convenient determination of comb line number
    * other extensions on request, ** tunable (patent protected, US 8284808B2), please inquire for more details

  • Applications

  • Literature

  • Related Products