S. M. Azooz, F. Ahmad, H. Ahmad, S. W. Harun, B. A. Hamida, S. Khan, A. Halder, M. C. Paul, M. Pal, S. K. Bhadra. Mode-locked 2 μm fiber laser with a multi-walled carbon nanotube as a saturable absorber[J]. Chinese Optics Letters, 2015, 13(3): 030602
- Chinese Optics Letters
- Vol. 13, Issue 3, 030602 (2015)
Fig. 1. The Raman spectrum obtained from the MWCNT-PVA film.
Fig. 2. The linear transmission curve of the MWCNT-PVA film, which shows the saturable absorption and non-saturable absorption values of around 4% and 45%, respectively.
Fig. 3. Experimental setup of the proposed mode-locked 2 μm fiber laser, using a hybrid gain media in conjunction with a MWCNT-PVA film SA. The inset shows the microscopic cross-sectional view of an octagonal-shaped, double-clad TYDF.
Fig. 4. Optical spectrum of the mode-locked laser.
Fig. 5. Oscilloscope trace of a typical pulse train from the mode-locked laser.
Fig. 6. Autocorrelation trace, with a sech 2
Fig. 7. RF spectrum of the mode-locked fiber laser.
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