Femtosecond mode-locked Nd,La:CaF_2 disordered crystal laser

Abstract

A diode-pumped femtosecond mode-locked Nd,La:CaF2 disordered crystal laser was reported for the first time. By appropriately choosing the Nd and La-doping concentration, stable mode-locked femtosecond laser pulses were obtained by using a semiconductor saturable absorber mirror (SESAM). The laser produced 633 fs pulses at the central wavelength of 1061 nm with an average output power of 200 mW at 82 MHz repetition rate.