Passively mode-locked GaInNAs disk laser operating at 1220 nm
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Updated: Jun 30, 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
Jussi Rautiainen1, Ville-Markus Korpijärvi, Janne Puustinen
1Optoelectronics Research Centre, Tampere University of Technology, P.O. Box 692, FIN 33101. jussi.rautiainen@tut.fi
Abstract:
We report an optically-pumped semiconductor disk laser passively mode-locked with a semiconductor saturable-absorber mirror. Both the absorber and the gain media were made of dilute nitride compound semiconductor, GaInNAs, which enables operation around 1.2 microm wavelengths. The laser generated 5 ps optical pulses with an average output power up to 275 mW. Our demonstration provides an attractive approach for efficiently generating red-wavelengths through external cavity frequency doubling.

