A directly diode-pumped Kerr-lens mode-locked Cr<sup>4+</sup>: YAG laser is demonstrated for what is to our knowledge the first time. Pulses as short as 65 fs with up to 30 mW of average output power, at a central wavelength of 1569 nm, were obtained at a repetition rate of 100 MHz. Low-loss chirped mirrors have been used for dispersion compensation up to the third order. Comparison with an Yb-fiber-pumped configuration shows good prospects for improvement.
© 2004 Optical Society of America
S. Naumov, E. Sorokin, and I. T. Sorokina, "Directly diode-pumped Kerr-lens mode-locked Cr4+:YAG laser," Opt. Lett. 29, 1276-1278 (2004)