High power dissipative soliton in an Erbium-doped fiber laser mode-locked with a high modulation depth saturable absorber mirror

Abstract

We report on a passively mode-locked erbium-doped fiber laser, using a high nonlinear modulation depth saturable absorber mirror, in a Fabry-Perot cavity. A segment of dispersion compensation fiber is added inside the cavity in order to build a high-positive dispersion regime. The setup produced highly chirped pulses with an energy of 1.8 nJ at a repetition rate of 33.5 MHz. Numerical simulations accurately reflect our experimental results and show that pulse-shaping in this laser could be interpreted as producing 'dissipative solitons'.

All-fiber highly chirped dissipative soliton generation in the telecom range

“…For the TI mode-locked oscillators, 170 fs, 0.21 nJ pulses were demonstrated [17] showing thus 5-fold pulse energy increase at similar pulse durations in comparison to the results reported previously for the anomalous dispersion regime [12]. Oscillators mode-locked with a semiconductor saturable absorber mirror (SESAM), another conventional technique [18][19][20] provided significantly longer, 528 fs pulses of 1.8 nJ energy [18], or 700 fs, 38 nJ [20]. This approach breaks an all-fiber concept and requires several intracavity bulk components.…”

Iteratively seeded mode-locking

“…Major advances for ultrashort-pulsed laser development have come through new understandings of the steady-state behavior of pulse evolutions. This is particularly evident in fiber laser systems with the development of stretched-pulse [2], passive self similar [3,4], amplifier similariton [5][6][7], and dissipative soliton evolutions [8][9][10][11][12][13][14][15][16][17][18], demonstrating that pulse qualities can be altered or optimized through careful engineering of resonator characteristics.Recent developments in algorithmic approaches to mode-locking have helped to further propel the field by optimizing the multi-parameter design space of these resonators in a way that is difficult or impossible through manual design. Specifically, researchers have implemented algorithmic and machine learning approaches to resonator parameter control, which, in concert with a suitable figure of merit, can help optimize a resonator for a certain pulse quality such as a minimum pulse width or a high peak power [19][20][21][22][23][24][25][26][27].…”

“…Major advances for ultrashort-pulsed laser development have come through new understandings of the steady-state behavior of pulse evolutions. This is particularly evident in fiber laser systems with the development of stretched-pulse [2], passive self similar [3,4], amplifier similariton [5][6][7], and dissipative soliton evolutions [8][9][10][11][12][13][14][15][16][17][18], demonstrating that pulse qualities can be altered or optimized through careful engineering of resonator characteristics.…”

Generation of highly-chirped dissipative solitons in Er-doped all-fiber oscillator

“…However, the generated pulses have quite long duration. The shortest one have been demonstrated in [13] (528 fs with 1.8 nJ energy). The energy of the observed pulses reached 38 nJ, however, their duration also increased up to 700 fs [15].…”