This article is cited in 21 papers

Special issue devoted to fibre lasers

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

A. I. Trikshev^a, V. A. Kamynin^a, V. B. Tsvetkov^ab, P. A. Itrin<sup>c

a</sup> A.M. Prokhorov General Physics Institute Russian Academy of Sciences, Moscow
^b National Engineering Physics Institute "MEPhI", Moscow
^c Ulyanovsk State University

Abstract: 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.

Keywords: mode-locking, ultrashort pulses, harmonic mode-locking, fibre laser, frequency modulation.

Received: 09.10.2018
Revised: 18.10.2018

 English version: Quantum Electronics, 2018, 48:12, 1109–1112

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