Low-noise tunable high-repetition-frequency fiber laser based on an active–passive hybrid mode-locking mechanism
A hybrid mode-locked fiber laser that effectively combines the nonlinear polarization rotation (NPR) effect and active mode locking is designed and constructed. In the experiments, mode-locked pulse trains of first to 64th order with selectable harmonic mode locking, corresponding to repetition rate...
Gespeichert in:
Veröffentlicht in: | Applied optics (2004) 2024-12, Vol.63 (36), p.9283 |
---|---|
Hauptverfasser: | , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | A hybrid mode-locked fiber laser that effectively combines the nonlinear polarization rotation (NPR) effect and active mode locking is designed and constructed. In the experiments, mode-locked pulse trains of first to 64th order with selectable harmonic mode locking, corresponding to repetition rates from 16.09 MHz to 1.029 GHz, were realized, and a signal-to-noise ratio of up to 69.45 dB at 1.029 GHz proved the excellent stability of the laser output. The birefringence filter, consisting of a bias-preserving pigtail at the input of the modulator and a polarization controller, allows the laser to achieve a multi-wavelength output of up to eight channels. The inclusion of an NPR structure in the cavity effectively improves the SNR of the actively mode-locked harmonic pulses compared to a single-mechanism mode-locked laser. The laser provides a stable light source for the development of practical optical frequency combs. |
---|---|
ISSN: | 1559-128X 2155-3165 |
DOI: | 10.1364/AO.543937 |