The operating characteristics of a self-mode-locked Cr4+:YAG laser that produces sub-100-fs pulses are described. Stable, nearly transform-limited pulses are obtained at a central wavelength longer than 1.50 μm, and the spectrum of the wavelength is extended past 1.60 μm, over the net gain bandwidth of the laser material. The group-velocity dispersion and the third-order dispersion of the Cr-doped YAG rod are measured by a Fourier-transform interferometric cross-correlation technique, indicating that the group-velocity dispersion vanishes at a wavelength of 1.59 μm.
© 1994 Optical Society of America
Original Manuscript: June 24, 1994
Published: December 1, 1994
Yuzo Ishida and Kazunori Naganuma, "Characteristics of femtosecond pulses near 1.5 μm in a self-mode-locked Cr4+:YAG laser," Opt. Lett. 19, 2003-2005 (1994)