We report what we believe to be the first demonstration of a Kerr-lens mode-locked Cr31:LiSrAlF6 laser that is pumped by a single narrow-stripe AlGaInP laser diode with a diffraction-limited output beam. A novel low-loss three-mirror laser cavity design is described in which strong, localized Kerr lensing was exploited such that 75-fs-duration pulses were obtained for only 36 mW of incident pump power. This pump power was maintained for 18 h by just three AA batteries as the electrical power source. We have shown that mode locking can be sustained for pump powers as low as 22 mW.
- femtosecond cr3+
- lisralf6 laser
- single narrow-stripe
- AlGaInP laser diode
Valentine, G. J., Hopkins, J. M., LozaAlvarez, P., Kennedy, G. T., Sibbett, W., Burns, D., & Valster, A. (1997). Ultralow-pump-threshold, femtosecond CR31+:LiSrAlF6 laser pumped by a single narrow-stripe AlGaInP laser diode. Optics Letters, 22(21), 1639-1641. https://doi.org/10.1364/OL.22.001639