Abstract

We demonstrate a mode converter with an insertion loss of 0.36 dB based on mode coupling of tapered single-mode and two-mode fibers, and realize all-fiber flexible cylindrical vector lasers at 1550 nm. Attributing to the continuous distribution of a tangential electric field at taper boundaries, the laser is switchable between the radially and azimuthally polarized states by adjusting the input polarization. In the temporal domain, the operation is controllable among continuous-wave, $Q$-switched, and mode-locked statuses by changing the saturable absorber or pump strength. The duration of $Q$-switched radially/azimuthally polarized laser spans from 10.4/10.8 to 6/6.4 μs at the pump range of 38 to 58 mW, while that of the mode-locked pulse varies from 39.2/31.9 to 5.6/5.2 ps by controlling the laser bandwidth. The proposed laser combines the features of a cylindrical vector beam, a fiber laser, and an ultrafast pulse, providing a special and cost-effective source for practical applications.

© 2018 Optical Society of America

High efficiency all-fiber cylindrical vector beam laser using a long-period fiber grating

Ruishan Chen, Jinghao Wang, Xiaoqiang Zhang, Anting Wang, Hai Ming, Feng Li, Dick Chung, and Qiwen Zhan
Opt. Lett. 43(4) 755-758 (2018)

Mode-locked all-fiber laser producing radially polarized rectangular pulses

Biao Sun, Anting Wang, Chun Gu, Guoliang Chen, Lixin Xu, Dick Chung, and Qiwen Zhan
Opt. Lett. 40(8) 1691-1694 (2015)

All-fiber hectowatt radially polarized laser system

Shixin Liu, Xinlei Shi, Hang Liu, Wanjing Peng, Yujun Feng, Yinhong Sun, Yi Ma, Zhigang Zhao, Qingsong Gao, Zhaojun Liu, and Chun Tang
Opt. Lett. 49(4) 891-894 (2024)

Single/dual-wavelength switchable bidirectional Q-switched all-fiber laser using a bidirectional fiber polarizer

Chuanhang Zou, Qianqian Huang, Tianxing Wang, Zhijun Yan, Mohammed AlAraimi, Aleksey Rozhin, and Chengbo Mou
Opt. Lett. 43(19) 4819-4822 (2018)

Actively mode-locked all fiber laser with cylindrical vector beam output

Yong Zhou, Anting Wang, Chun Gu, Biao Sun, Lixin Xu, Feng Li, Dick Chung, and Qiwen Zhan
Opt. Lett. 41(3) 548-550 (2016)