Thulium-doped fiber laser mode-locked by nonlinear polarization rotation in a chalcogenide tapered fiber
Imtiaz Alamgir, Martin Rochette
Abstract
We demonstrate a thulium-doped fiber laser that is mode-locked thanks to nonlinear polarization rotation (NPR) in a chalcogenide tapered fiber. The high nonlinearity of the tapered fiber leads to a combined reduction in mode-locking threshold power and cavity length compared to any all-silica NPR based mode-locked lasers. In the continuous wave mode-locking regime, the laser generates stable, tunable solitons pulses. In the Q-switched mode-locked regime, it allows single and multiwavelength pulses, tunable central wavelength and tunable multiwavelength separation.
Topics & Concepts
Materials scienceFiber laserOpticsMode-lockingLaserChalcogenideOptoelectronicsPolarization-maintaining optical fiberPhotonic-crystal fiberDispersion-shifted fiberFiber Bragg gratingThuliumOptical fiberWavelengthDopingFiber optic sensorPhysicsAdvanced Fiber Laser TechnologiesPhotonic Crystal and Fiber OpticsSolid State Laser Technologies