Femtosecond (191 fs) NaY(WO4)(2) Tm,Ho-codoped laser at 2060 nm

We report, for the first time to our knowledge, femtosecond-pulse operation of a Tm,Ho:NaY(WO4)2 laser at around 2060nm. Transform-limited 191fs pulses are produced with an average output power of 82mW at a 144MHz pulse repetition frequency. Maximum output power of up to 155mW is generated with a corresponding pulse duration of 258fs. An ion-implanted InGaAsSb quantum-well-based semiconductor saturable absorber mirror is used for passive mode-locking maintenance.