Passive harmonic mode-locking in an erbium-doped fibre laser

Research paper by A I Trikshev, V A Kamynin, V B Tsvetkov P A Itrin

Indexed on: 21 Dec '18Published on: 18 Dec '18Published in: Quantum electronics


We report an all-fibre erbium laser operating in the regime of passive harmonic mode-locking based on the effect of nonlinear polarisation rotation. The generation of the 67th harmonic with a pulse repetition rate of 5.62 GHz and a duration of 1.8 ps is demonstrated. It is shown that as the harmonic number increases, both the frequency modulation parameters and the pulse duration change.