title: Experimental investigation of high-energy wave-breaking-free-pulse generation in bidirectional-pumping all-fiber laser.
abstract: We report a passively mode-locked all-fiber laser with bidirectional pumping, emitting high-energy wave-breaking-free pulses. Experimental investigations show that forward and backward pump powers mainly contribute on the chirp and the nonlinear phase shift of pulses, respectively. Nonlinear chirp pulses with 50 nJ pulse energy, 340 ps duration at a 8.2 MHz repetition rate are directly emitted from the all-fiber laser pumped by two 550 mW, 977 nm laser diodes. The pulses cannot be compressed to near the transform limit, showing that the chirp of pulses is nonlinear.
authors: State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China. liuxueming72@yahoo.com
authors: Xueming
authors: X
authors: Liu
authors: Dong
authors: D
authors: Mao
authors: Leiran
authors: L
authors: Wang
authors: Lina
authors: L
authors: Duan