Mode-locked fiber laser frequency-controlled with an intracavity electro-optic modulator
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Updated: Aug 14, 2026
Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
Published on: November 22, 2019
Darren D Hudson1, Kevin W Holman, R Jason Jones
1JILA, National Institute of Standards and Technology Department of Physics, University of Colorado, Boulder, Colorado 80309-0440, USA. hudsond@jilau1.colorado.edu
Abstract:
We demonstrate a mode-locked, erbium-doped fiber laser with its repetition frequency synchronized to a second fiber laser via an intracavity electro-optic modulator (EOM). With servo control from the EOM (bandwidth approximately 230 kHz) and a slower speed intracavity piezoelectric transducer (resonance at approximately 20 kHz), we demonstrate stabilization of the repetition frequency with an in-loop rms timing jitter of 10 fs, integrated over a bandwidth from 1 Hz to 100 kHz. This represents what is to our knowledge the first time an EOM has been introduced inside a mode-locked laser cavity for fast servo action and the lowest timing jitter reported for a mode-locked fiber laser.
