title: All-fiber passively mode-locked laser based on a chiral fiber grating.
abstract: A novel passively mode-locked all-fiber laser using a chiral fiber grating as a polarization-selective element is demonstrated for the first time, to the best of our knowledge. The chiral fiber grating serves as a key component to form an artificial saturable absorber to realize mode locking through nonlinear polarization rotation in the cavity. The laser generates stable short pulses with energy of 0.34 nJ, a fundamental repetition rate of 3.27 MHz, and an FWHM bandwidth of 28 nm. We also show that harmonic mode-locked pulse trains of different orders can be obtained by increasing the pump power.
authors.forename: Yueqing
authors.initials: Y
authors.lastname: Du
authors.forename: Xuewen
authors.initials: X
authors.lastname: Shu
authors.forename: Zuowei
authors.initials: Z
authors.lastname: Xu
mesh_terms: D007834:Lasers; D055100:Optical Fibers; D055620:Optical Phenomena