期刊
APPLIED PHYSICS LETTERS
卷 97, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3521257
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资金
- Ministry of Education, Science, and Technology (MEST), Republic of Korea [2009-0064477]
- National Research Council of Science & Technology (NST), Republic of Korea [2E21760] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [핵06A1905, 2009-0064477] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
An efficiently prepared graphene from a bulk graphite using mechanical exfoliation is experimentally investigated for the first practical application to ultrafast photonics. Overcoming the limitations of the method in its size and atomic layer control, the multilayered graphene guarantees a nonlinear intensity modulation. After confirming its excellent crystal quality and few-layered nanostructure employing Raman analysis and atomic force microscopy the graphene layer is introduced into a fiber laser as an intracavity saturable absorber to realize the passive mode-locking that produces picosecond pulses at the repetition rate of 10.9 MHz. Extinction ratio of the resultant pulsed output is higher than 40 dB. (C) 2010 American Institute of Physics. [doi:10.1063/1.3521257]
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