Sub-100 fs mode-locked Tm:CLTGG laser

We report on the first sub-100 fs mode-locked laser operation of a Tm(3+)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 similar to 87.7 MHz. In the sub-100 fs regime, the maximum average output power amounted to 103 mW. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Automated summary

We reported the first sub-100 fs mode-locked laser operation of a Tm:CLTGG crystal, using a single-walled carbon nanotube saturable absorber to achieve soliton mode-locking and obtain 69 fs pulses.