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73-fs SESAM mode-locked Tm,Ho:CNGG laser at 2061 nm

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Original languageEnglish
Title of host publicationSolid State Lasers XXIX
Subtitle of host publicationTechnology and Devices
EditorsW. Andrew Clarkson, Ramesh K. Shori
ISBN (Electronic)9781510632820
ISBN (Print)9781510632813
Publication statusPublished - 2020
Publication typeA4 Article in a conference publication
EventSolid State Lasers XXIX: Technology and Devices - San Francisco, United States
Duration: 4 Feb 20206 Feb 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceSolid State Lasers XXIX: Technology and Devices
CountryUnited States
CitySan Francisco


Tm,Ho co-doped disordered calcium niobium gallium garnet (CNGG) crystals are investigated as a novel gain medium for mode-locked lasers near 2 μm. With a GaSb-based semiconductor saturable absorber mirror (SESAM) and chirped mirrors for dispersion compensation such a laser is mode-locked at a repetition rate of 89.3 MHz. For a 5% output coupler, a maximum average output power of 157 mW is obtained with a pulse duration of 170 fs (28-nm broad spectrum centered at 2.075 μm, leading to a time-bandwidth product of 0.331). With a 0.5% output coupler, 73-fs pulses are generated at 2.061 μm with a spectral width of 62 nm (time-bandwidth product of 0.320) and an average output power of 36 mW.


  • Disordered garnets, Femtosecond pulses, Holmium lasers, Mode-locked lasers, Semiconductor saturable absorber mirror (SESAM), Solid-state lasers, Thulium lasers

Publication forum classification

Field of science, Statistics Finland