We experimentally demonstrate a diode-pumped passively mode-locked femtosecond laser with Yb<sup>3+</sup>-doped yttrium lanthanum oxide ceramic. Mode-locking is achieved by using a semiconductor saturable absorber mirror, and intracavity dispersion is compensated by a pair of SF6 prisms. Laser pulses as short as 357 fs at a central wavelength of 1 075 nm are obtained. The maximum average output power is 670 mW under 4.5 W of pumping power with a slope efficiency of 20%. To the best of our knowledge, this is the shortest pulse generated from Yb-doped yttrium lanthanum oxide ceramic lasers with a sub-500 fs pulse duration.
© 2012 Chinese Optics Letters
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(140.4050) Lasers and laser optics : Mode-locked lasers
(140.7090) Lasers and laser optics : Ultrafast lasers
(140.3615) Lasers and laser optics : Lasers, ytterbium
Lasers and Laser Optics
Jiangfeng Zhu, Zhaohua Wang, Qing Wang, Zhiguo Zhang, Qiuhong Yang, Junhong Yang, Yunfeng Ma, and Zhiyi Wei, "Diode-pumped passively mode-locked femtosecond Yb:(Y0.9La0.1)2O3 ceramic laser," Chin. Opt. Lett. 10, 121403-121403 (2012)