title: Transverse mode switchable fiber laser through wavelength tuning.
abstract: We report a fiber laser design that is capable of producing switchable transverse modes through wavelength tuning. The transverse mode switching is realized by exploiting the particular transverse mode-wavelength association characteristics of the few-mode fiber Bragg grating. Different transverse mode outputs with high spatial mode quality can be obtained by adjusting the oscillating wavelength with a tunable filter within the fiber laser cavity. For each of the spatial mode outputs, the laser operates at the corresponding single wavelength with narrow linewidth. Through adding polarization controllers in the laser cavity, output modes with cylindrical vector polarization are also realized.
authors: Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei 230026, China.
authors: Biao
authors: B
authors: Sun
authors: Anting
authors: A
authors: Wang
authors: Lixin
authors: L
authors: Xu
authors: Chun
authors: C
authors: Gu
authors: Yong
authors: Y
authors: Zhou
authors: Zhongxi
authors: Z
authors: Lin
authors: Hai
authors: H
authors: Ming
authors: Qiwen
authors: Q
authors: Zhan