Multiwavelength mode-locked cylindrical vector beam fiber laser based on mode selective coupler. (21st September 2017)

• Record Type: Journal Article
• Authors: Huang, Ping; Cai, Yu; Wang, Jie; Wan, Hongdan; Zhang, Zuxing; Zhang, Lin
• Is Part Of: Laser physics letters. Volume 14:Number 10(2017:Oct.)
• Publication Date: 2017-09-21
• Subjects: cylindrical vector beam -- multiwavelength -- mode locking; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa82cd
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We propose and demonstrate a multiwavelength mode-locked fiber laser with cylindrical vector beam generation for the first time, to the best of our knowledge. The mode-locking mechanism is based on a nonlinear polarization rotation effect in fiber, and the multiwavelength operation is contributed to by an in-line birefringence fiber filter with periodic multiple passbands, formed by incorporating a section of polarization maintaining fiber into the laser cavity with a fiber polarizer. Furthermore, by using a home-made mode selective coupler, which acts as both a mode converter from fundamental mode to higher-order mode and an output coupler, multiwavelength mode-locked cylindrical vector beams have been obtained. This may have potential applications in mode-division multiplexing optical fiber communication and material processing.