期刊
OPTICS EXPRESS
卷 17, 期 24, 页码 21788-21793出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.17.021788
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资金
- Korean Government (MOEHRD) [KRF-2008-331-C00114]
- Korea government (MEST) [2009-0059729]
- Ajou University [20081180]
- National Research Foundation of Korea [과06A1104, 331-2008-1-C00114] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We propose a novel in-line saturable absorber incorporating a hollow optical fiber (HOF) filled with single-walled carbon nanotube (SWCNT) dispersion. The evanescent field of the propagating light in the ring core interacts with the SWCNT/polymer composite distributed over the whole length of the HOF. The proposed saturable absorber with all-fiber format offers the robust and long nonlinear interaction along the waveguide direction expecting the increase of the threshold for optical and thermal damages with simple fabrication process. Low concentration SWCNT/polymer composite exhibiting very broadband resonant absorption around 1.5 mu m with low scattering loss is prepared and based on this, we successfully demonstrate the passively mode-locked fiber laser including the SWCNT-filled HOF where the spectral bandwidth and the pulse duration of the laser output are 5.5 nm and 490 fs, respectively, with a repetition rate of 18.5 MHz. (C) 2009 Optical Society of America
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