Recent advance of high-energy ultrafast mode-locked oscillators based on Mamyshev mechanism with different starting modes

Abstract

The nonlinear effect of fiber limits the further increase in pulse energy, and Mamyshev oscillator shows outstanding advantages in managing nonlinearity in waveguide medium, which is now associated with high peak power and high pulse energy. The potential applications of these laser sources based on Mamyshev mechanism have facilitated aggressive research and innovative ideas by researchers around the world. Here, we focus on the modelocked principle and starting dynamics of Mamyshev oscillator. The review of Mamyshev technology is summarized from two starting modes of seed source injection and self-starting. Initial research and significant progress in this field, plus new insights and challenges of Mamyshev oscillator for ultrafast fiber laser technology are analyzed.

The Influence of Spectral Filtering Bandwidth and Laser Gain on the Bound-State Pulse Formation Mechanism and Evolutionary Dynamics in the All-Fiber Mamyshev Oscillator

“…In this phenomenon, although the spectral broadening caused by self-phase modulation is helpful for the start-up and operation of the Mamyshev oscillator, excessive nonlinear accumulation is not conducive to a higher single-pulse energy output. Therefore, in order to achieve a higher single-pulse energy output, a free-space structure or large mode field photonic crystal fibers can be adopted in the design of the Mamyshev oscillator to avoid the pulse splitting and instability caused by excessive nonlinear accumulation [13,25,[33][34][35].…”

Multipulse operation in Mamyshev oscillator: influence of external seed source

“…Recently, there has been renewed interest in Mamyshev-type ultrafast fiber oscillators due to their simple construction, higher degree of environmental stability and, most importantly, tolerance towards the high nonlinear phase shift, which is crucial for high-energy single pulses [1][2][3][4][5][6]. In its simplest form, a Mamyshev oscillator (MO) consists of two gain media and two offset band pass filters (BPFs) of appropriate bandwidths which are spectrally blind to each other.…”