Pulse generation in Yb-doped polarization-maintaining fiber laser by nonlinear polarization evolution*

Abstract

We demonstrate a self-started, long-term stable polarization-maintaining mode-locked fiber laser based on the nonlinear polarization evolution technique. A polarized beam splitter is inserted into the cavity of the linear polarization-maintaining fiber laser to facilitate self-started mode-locking. Pulses with single pulse energy of 26.9 nJ and average output power of 73.9 mW are obtained at the pump power of 600 mW. The transmission characteristics of artificial saturable absorber used in this laser are analyzed theoretically, the influence of the half-wave plate state on mode-locking is discussed, and the mode-locking range is obtained, which is well consistent with the experimental results.

A cladding-pumping based power-scaled noise-like and dissipative soliton pulse fiber laser

“…With the development of ultrashort pulse lasers continually moving in the minimization, portable and flexible direction, mode-locked fiber lasers have attracted considerable attention and have been thoroughly researched in the past. In addition to nonlinear systems that are used to generate coherent pulses [1] for fundamental science and application fields, passively mode-locked fiber lasers can be treated as ideal platforms to research and explore various unstable phenomena and soliton dynamics. [2][3][4] Typically, under the guidance of the complex Ginzburg-Landau equation, various intriguing nonlinear processes, such as soliton rain, [5] soliton molecules, [6] soliton resonance, [7] soliton explosion, [8] and rogue wave [9] have been extensively experimentally investigated in conventional single-mode fiber lasers.…”