Abstract
In this study, we utilized the Time-Stretch Dispersive Fourier Transform (TS-DFT) method to explore rapid transient states in both time and frequency domains of an all-polarization-maintaining dispersion-managed figure-eight mode-locked laser with Nonlinear Amplifying Loop Mirror (NALM). We detail the different stages of build-up dynamics at varying pump powers, encompassing the Q-switching (QS) stage, transient single pulse formation, pulsation beating patterns, bound states, and the final transition to a single pulse state. Our findings reveal that the mode-locked bound state regime emerges from a single pulse stage following QS, different from previously reported directly resulting from QS pulses or relaxation oscillations. In a novel contribution to the field, we have experimentally demonstrated the transient single pulse stage of build-up dynamics and compared it with the fundamental mode-locked single pulse.
| Original language | English |
|---|---|
| Article number | 129852 |
| Number of pages | 7 |
| Journal | Optics Communications |
| Volume | 547 |
| Early online date | 23 Aug 2023 |
| DOIs | |
| Publication status | Published - 15 Nov 2023 |
Bibliographical note
© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Acknowledgements & Funding: This research was supported by the EPSRC project EP/W002868/1 and the European Union’s Horizon 2020 research and innovation programme under Grant Agreement 871277.
Keywords
- Bound state
- Mode locking
- Nonlinear amplifying loop mirror
- Polarization maintaining fiber
- Q-switching
- Soliton molecules
- Time-stretch dispersive fourier transform