IEEE Photonics Technology Letters · 2009 · 259 citations · 12 references
Natural SciencesMaterials EngineeringMaterials ScienceOpticsOptoelectronicsPhotonicsFiber OpticsLaser PhysicsNanotubesOptical FibersOptical ResonatorsRare-earth-doped MaterialsAxial StrainConnectorsFiber Bragg GratingsFiber LasersOptical Properties Of NanotubesQ-switched LasersRare-earth-doped FibersSingle-walled Carbon Nanotubes
The paper presents an all‑fiber tunable, passively Q‑switched erbium‑doped fiber laser. The laser employs single‑wall carbon nanotube saturable absorbers deposited on fiber connectors and achieves tunability by axially straining a fiber Bragg grating mirror. The device reaches a low pump threshold of 11.1 mW and shows a self‑mode‑locking effect that can be suppressed by adding an unpumped EDF segment.
An all-fiber tunable passively Q-switched erbium-doped fiber (EDF) laser is presented. Saturable absorbers are constructed by optically driven deposition of single-wall carbon nanotubes on fiber connectors. A low pump threshold of 11.1 mW is achieved. Self-mode-locking effect is also observed, and it could be suppressed by splicing an extra unpumped EDF into the laser ring cavity. The laser can be tuned by applying axial strain on the fiber Bragg grating which serves as a narrowband external mirror of the cavity.
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Wideband-tuneable, nanotube mode-locked, fibre laser
Fengqiu Wang, Aleksey Rozhin, Vittorio Scardaci et al. · Nature Nanotechnology · 2008 · 649 citations · Full text