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Updated: May 25, 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
Passively mode locked femtosecond Tm:Sc2O3 laser at 2.1 μm
A A Lagatsky1, P Koopmann, P Fuhrberg
1SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews, UK. aal2@st-andrews.ac.uk
Abstract:
We report on the passive mode locking of a Tm3+:Sc2O3 laser at 2.1 μm using a semiconductor saturable absorber mirror based on InGaAsSb quantum wells. Transform-limited 218 fs pulses are generated with an average power of 210 mW. A maximum output power of 325 mW is produced during mode locking with the corresponding pulse duration of 246 fs at a pulse repetition frequency of 124.3 MHz. A Ti:sapphire laser is used as the pump source operating at 796 nm.
