Abstract

In 2001, a concept was proposed to generate mode-locked ultrashort laser pulses with a repetition rate in excess of 10 THz [Phys. Rev. Lett. 87, 223901 (2001) [CrossRef]  ], which has not been demonstrated so far. In the present research, the concept is experimentally demonstrated using a dispersion-compensated high-finesse cavity filled with hydrogen gas. Second-order intensity autocorrelation is used for distinguishing two cases with and without mode-locking as well as for characterization of the temporal profile. Mode-locked sub-30-fs pulses with a repetition rate of 17.6 THz are synthesized by continuous-wave laser lines generated via stimulated Raman scattering and four-wave Raman mixing induced in the high-finesse cavity.

© 2017 Optical Society of America

Generation of a continuous-wave pulse train at a repetition rate of 17.6THz

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