TOPTICA Photonics AG - A passion for precision -

Difference Frequency Comb (DFC)

Compact, robust, high-end

TOPTICA’s frequency comb product line uses TOPTICA proprietary CERO-technology which is based on Difference Frequency Generation (DFG). It is inherently fCEO-stable and is characterized by a high robustness combined with high-end performance.

See more in our product video:

  • DFC Complete System
  • Complete DFC System

Compact high performance frequency comb

All you need in a small volume

  • Turn-key
  • Robust
  • 19 inch compatible
  • No additional electronics needed
  • Suitable for high-end applications


  • One central software
  • Automatic locking to RF-reference
  • Remote control and locking


fCEO- stabilization by Difference Frequency Generation (DFG)

  • Intrinsically stable
  • Simple and reliable
  • Passive, all-optical phase-lock
  • Effective fCEO locking bandwidth of 80 MHz
  • fn = nfrep, perfect for use with optical reference Puppe et al., Optics letters 41, 8 (2016)
  • Narrow free running linewidth

TOPTICA engineering

  • 20 years of experience building industry-grade lasers
  • Comb, diode laser and locking electronics out of one hand
  • Complete rack-mounted laser systems, ready to use from day one

  • Wavelength 1560 nm
  • frep=80 MHz
  • All electronics included
  • 4 or 8 offset-free outputs

  • Phase frequency lock DL pro to DFC
  • Phase frequency lock to optical reference

  • Between 420 - 2200 nm
  • Lock any TOPTICA Laser
  • Robust
  • Upgradeable

  • Stable
  • Compact
  • Flexible
  • Fiber coupled