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DFC CORE / DFC CORE+

Compact low-noise Frequency Comb

  • DFC CORE
  • Specifications
    SpecificationsDFC COREDFC CORE+
    Center wavelength1560 nm (other wavelengths see DFC Extensions)
    Comb spacing80 MHz
    Laser outputs4 or 8, fiber coupled, polarization maintaining, FC/APC
    Bandwidth> 25 nm, each output
    Power> 10 mW, each output
    Phase stability (RMS)< 35 mrad, typ. < 8 mrad in 20 s @ [50 mHz, 5 Hz]
    Integrated phase noiseDFG comb advantage: A. Liehl et al., Optics Letters Vol. 42, Issue 10 (2017)
    ReferenceDFC RF** (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 lock10 kHz, optimal with DFC RF> 400 kHz (typ. 450 kHz)
    Stability1 · 10-13 in 1 s*1 · 10-16 in 1 s*, 3 · 10-18 in 1000 s*
    Accuracy1 · 10-14 in 100 s*1 · 10-17 in 1000 s*
    Dimensions (H x W x D)133 x 450 x 633 mm, incl. electronics

    133 x 450 x 633 mm
    FALC+PFD: 131 x 184 x 286 mm

    Reference input800 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 requirementsNone
    Power consumption< 100 W
    Operating temperature21 ± 5 °C
    Weight< 30 kg
    Power supply100...120 V / 220...240 VAC, 50...60 Hz (auto detect)
    * or same as reference, whichever applies first, ** not included

  • Options
    OptionsModelDescriptions
    Wavelength extension*DFC IRCentered @ 1560 nm, bandwidth > 80 nm, typ. 100 nm
    DFC NIRCentered @ 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
    ReferenceDFC RFLow-noise oven-controlled quartz, output: 800 MHz, input: 10 MHz
    DFC GPSGPS frequency reference, output: 10 MHz, stability: 1.3 · 10-12 @ 1s, 1 · 10-13 @ 40000 s
    Beat units

    DFC BCBeam combiner for DFC and cw-laser, fiber coupled
    DFC BCFFiber beam combiner for DFC and cw-laser, 980 nm, 1030 nm, 1300 nm, 1550 nm
    DFC MDMonochromatic detector unit, fiber coupled, use with DFC BC / DFC BCF
    Locking electronicsFALCFast analog 2-channel PID
    PFDPhase frequency detector
    AccessoriesDFC SCOPEDigital oscilloscope with spectrum analyzer (FFT), for beat monitoring up to 4 beats
    DFC COUNT4 channel counter
    HF-WS / DFCHigh 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