Performance optimization of a GHz-repetition-rate fundamentally mode-locked Tm-fiber laser using tapered fiber structures
Abstract
-doped fiber lasers by tapering the gain fiber. By leveraging a versatile mode field diameter of a single-sided conical tapered fiber that attaches to the saturable absorber, evident spectral broadening and femtosecond pulse generation are fulfilled in the soliton mode-locking operation. In this scenario, a mode-locked pulse operating at a fundamental repetition rate of 1.03 GHz has a 3-dB spectral bandwidth of 10.26 nm and a pulse width of ∼524 fs. The phase noise in the high-frequency range of >200 kHz, in contrast to the untapered case, is well suppressed. The present work offers an approach to manipulate effective intracavity nonlinearity and realize a significant optimization of the mode-locking performance.
Fields of Study & Subjects
Advanced Fiber Laser Technologies
Photonic Crystal and Fiber Optics
Advanced Fiber Optic Sensors
Publication details
- Journal / source
- Optics Express
- Publisher
- Optica Publishing Group
- Volume
- 34
- Issue
- 10
- Pages
- 18001–18001
- Publication date
- 23 April 2026
- Language
- EN