Sesam mode-locked yb:Ca3gd2(bo3)4 femtosecond laser

Identificador:  imarina:9230404

Handle: https://hdl.handle.net/20.500.11797/imarina9230404

Autores:  Zeng, HJ; Lin, ZL; Xue, WZ; Zhang, G; Pan, ZB; Lin, HF; Loiko, P; Mateos, X; Petrov, V; Wang, L; Chen, WD

Resumen:
We report on the first passively mode-locked femtosecond-laser operation of a disordered Yb:Ca3Gd2(BO3)4 crystal using a SEmiconductor Saturable Absorber Mirror (SESAM). Pumping with a single-transverse mode fiber-coupled laser diode at 976 nm, nearly Fouri-er-transform-limited pulses as short as 96 fs are generated at 1045 nm with an average output power of 205 mW and a pulse repetition rate of ~67.3 MHz. In the continuous-wave regime, high slope efficiency up to 59.2% and low laser thresholds down to 25 mW are obtained. Continuous wavelength tuning between 1006–1074 nm (a tuning range of 68 nm) is demonstrated. Yb:Ca3Gd2(BO3)4 crystals are promising for the development of ultrafast lasers at ~1 μm.