Menglin Liu, Kun Zhao, Wei Yan, Lisha Wang, Minzhe Liu, Yong Wang, Songsong Sun. 1 015-1 046 nm tunable femtosecond Yb-doped fiber laser[J]. Infrared and Laser Engineering, 2022, 51(6): 20210444
- Infrared and Laser Engineering
- Vol. 51, Issue 6, 20210444 (2022)
Fig. 1. Setup of tunable femtosecond Yb-doped fiber laser device based on grating pair in cavity and spectral filter
Fig. 2. Slit bandwidth optical path calculation
Fig. 3. (a) Laser can be tuned from 1015.97 nm to 1045.67 nm when the net cavity dispersion near zero; (b) Laser works in positive dispersion and the spectrum can be tuned from 1015.74 nm to 1037.72 nm; (c) Laser operates under negative dispersion and has a spectrum tuned from 1020 nm to 1046 nm
Fig. 4. Variation of spectral width with different net dispersion in cavity (Insert：2D view)
Fig. 5. Spectrum (a), pulse width (b), and pulse train (c) of the laser at normal (blue line), near-zero (red line), and abnormal (black line) dispersion
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