We report a self-starting mode-locked Cr<sup>4+</sup>:YAG laser with a low-loss broadband metal reflector–based semiconductor saturable-absorber mirror. The minimum pulse width was 44 fs at a wavelength of 1520 nm.
© 1999 Optical Society of America
Zhigang Zhang, Tadashi Nakagawa, Kenji Torizuka, Takeyoshi Sugaya, and Katsuyuki Kobayashi, "Self-starting mode-locked Cr4+:YAG laser with a low-loss broadband semiconductor saturable-absorber mirror," Opt. Lett. 24, 1768-1770 (1999)