Method of Generating Femtosecond Cylindrical Vector Beams Using Broadband Mode Converter

Feng Wang,Fan Shi,Teng Wang,Fufei Pang,Tingyun Wang,Xianglong Zeng

IEEE Photonics Technology Letters（2017）

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摘要

We experimentally obtain femtosecond cylindrical vector beams based on a mode-locked fiber laser (MLFL) by using a fused few-mode coupler. Pulses of 300 fs duration with radially and azimuthally polarized modes are directly delivered at the central wavelength of 1566 nm. The fused few-mode fiber coupler inserted inside the cavity acts as a mode converter from LP01 mode to LP11 mode with a wide ban...

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关键词

Couplers,Optical fiber couplers,Optical fiber polarization,Cavity resonators,Laser beams,Ultrafast optics,Fiber lasers

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