Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 26, Issue 4, Pages 360-363Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2013.2294017
Keywords
Fiber laser; saturable absorber; graphene; microfiber; pulse-width tunable
Funding
- Hong Kong Polytechnic University Research [G-YM19, 4-ZZE6]
- National Natural Science Foundation of China [61205132]
- Research Fund for the Doctoral Program of Higher Education of China [20120071120023]
- Fundamental Research Funds for the Central University [GKH1232000/007, 20520133249, 20520131128]
- Shanghai Ultra-Precision Optical Manufacturing Engineering Technology Research Center [11DZ2282200]
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An absorption-adjustable graphene saturable absorber is used in a simple fiber laser system for an active control of the pulse-width of optical pulses. Such a saturable absorber is created by tightly attaching the graphene film onto the upper surface of the microfiber, thus an enhanced evanescence-field interaction between the propagating light along the microfiber length and graphene can be achieved. By tuning the polarization state of the light beam launched into the saturable absorber from TE to TM mode, the pulse-width of the pulses is varied between similar to 9.24 and similar to 2.32 ps.
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