NDLI: Switchable Dual-Wavelength Cylindrical Vector Beam Generation From a Passively Mode-Locked Fiber Laser Based on Carbon Nanotubes

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Switchable Dual-Wavelength Cylindrical Vector Beam Generation From a Passively Mode-Locked Fiber Laser Based on Carbon Nanotubes

Content Provider	Semantic Scholar
Author	Zhang, Zuxing Wang, Jie Wan, Hongdan Zhang, Lin
Copyright Year	2018
Abstract	Cylindrical vector beams (CVBs) with axial symmetry in both polarization and field intensity have attracted much attention because of their unique optical properties. Conventional methods to obtain CVBs including direct modulation of light beams in free space and high-order mode excitation by offset splicing single-mode fiber with few-mode fiber usually works at single wavelength with rather narrow bandwidth. Here, for the first time to the best of our knowledge, we demonstrate switchable dual-wavelength CVB generation from a passively mode-locked fiber laser using carbon nanotubes as saturable absorber for mode-locking and a home-made mode-selective coupler as both mode converter and birefringence filter. In experiments, the mode-locked fiber laser delivers CVB pulses of dual-wavelength (1532.5 nm and 1555.5 nm) and corresponding single wavelength with duration of hundreds of femtosecond, respectively. Moreover, the output polarization status is switchable between radially and azimuthally polarized states. The mode-locked CVBs with wavelength and polarization flexibility may have potential applications in mode-division multiplexing optical fiber communication, nanoparticle manipulation, material processing, nonlinear optics, and so on.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1109/JSTQE.2017.2761126
Volume Number	24
Alternate Webpage(s)	https://research.aston.ac.uk/portal/files/23583217/Switchable_Dual_Wavelength_Cylindrical_Vector.pdf
Alternate Webpage(s)	https://doi.org/10.1109/JSTQE.2017.2761126
Journal	IEEE Journal of Selected Topics in Quantum Electronics
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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