期刊
OPTICS EXPRESS
卷 20, 期 25, 页码 27888-27895出版社
OPTICAL SOC AMER
DOI: 10.1364/OE.20.027888
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资金
- National 973 Program of China [2012CB315701]
- National Natural Science Foundation of China [61025024, 61205125]
- Hunan Provincial Natural Science Foundation of China [12JJ7005]
- Program for New Century Excellent Talents in University of China [NCET 11-0135]
- National Natural Science Fund Foundation of China [61222505]
Based on the open-aperture Z-scan measurement, we firstly uncovered the saturable absorption property of the topological insulator (TI): Bi2Se3. A high absolute modulation depth up to 98% and a saturation intensity of 0.49 GWcm(-2) were identified. By incorporating this novel saturable absorber material into an erbium-doped fiber laser, wavelength tunable soliton operation was experimentally demonstrated. Our result indicates that like the atomic layer graphene, the topological insulator Bi2Se3 could also operate as an effective saturable absorber for the passive mode locking of lasers at the telecommunication band. (C)2012 Optical Society of America
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