OSA Open Access Publishing AgreementWang, LiChen, WeidongPan, ZhongbenLoiko, PavelBae, Ji EunRotermund, FabianMateos, XavierGriebner, UwePetrov, Valentin2022-04-042022-04-042021https://oa.tib.eu/renate/handle/123456789/8557https://doi.org/10.34657/7595We report on the first sub-100 fs mode-locked laser operation of a Tm3+-doped disordered calcium lithium tantalum gallium garnet (Tm:CLTGG) crystal. Soliton mode-locking was initiated and stabilized by a transmission-type single-walled carbon nanotube saturable absorber. Pulses as short as 69 fs were achieved at a central wavelength of 2010.4 nm with an average power of 28 mW at a pulse repetition rate of ∼87.7 MHz. In the sub-100 fs regime, the maximum average output power amounted to 103 mW.enghttps://www.osapublishing.org/library/license_v1.cfm530Pulse repetition rateSaturable absorbersSingle-walled carbon nanotubes (SWCN)Average output powerAverage powerCentral wavelengthMode-lockedMode-locked laser operationSingle-walled carbon nanotube saturable absorbersMode-locked fiber lasersArticle