Journal
SCIENTIFIC REPORTS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep08690
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Funding
- NSFC [61275144, 61308049]
- Natural science fund of Guangdong province [S2013010012235]
- foundation for scientific and technical innovation in Higher Education of Guangdong [2013KJCX0161]
- Science and technology project of Shenzhen City [JCYJ20120613172042264, 20130329142040731]
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A novel saturable absorber (SA) was fabricated by coating the topological insulator (TI) film on microfiber using pulsed laser deposition (PLD) method. The TISA device had an insertion loss of similar to 1.25 dB, a saturable intensity of 26.7 MW/cm(2), a modulation depth of similar to 5.7%, and a nonsaturable loss of 20.5%. Upon employing this SA device, we established a passively mode-locked EDFL and achieved nearly free-chirped soliton pulse with 286 fs of pulse duration and >73 dB of signal to noise ratio (SNR). This result clearly evidences that the PLD is an effective scheme for practical SA device fabrication.
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