Request InfoTOPTICA Photonics Inc.TOPTICA’s difference frequency comb DFC operates with CERO technology (“zero-vCEO”) which obtains a phase-stable laser output with an inherently vanishing frequency offset. To achieve this, femtosecond laser pulses centered at 1560 nm are generated with a mode-locked Er3+ -doped fiber-oscillator. Subsequent amplification and coherent spectral broadening of the pulses in a nonlinear fiber creates a broad supercontinuum. Difference frequency generation (DFG) between the lower and upper spectral parts of the supercontinuum produces a frequency comb output centered at 1560...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra February 2024 IssueRackmount Optical ClockThe Evergreen-30 from Vector Atomic is a fully integrated optical clock offering 25 femtosecond stability at one second, and multi-day, sub-nanosecond holdover. 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