Experimental observation of transitions of different pulse solutions of the Ginzburg-Landau equation in a mode-locked fiber laser

Abstract

Transitions between different kinds of soliton solutions of Ginzburg-Landau equation (GLE) have been studied experimentally in a mode-locked fiber laser. It is demonstrated that the different kinds of solitons corresponding to different solutions of GLE can be generated in a single mode-locked laser. Dispersion-managed solitons (DM), all-normal-dispersion solitons (ANDi) and similaritons can be emitted respectively depending on the parameter of the intensity of the light field and the birefringence effect. The three nonlinear waves show different features especially the spectrum shapes and dynamics accompanying with pump power scaling. Such phenomenon reveals the properties of GLE, which is not only scientifically interesting but also valuable to practical applications of mode-locked fiber lasers.

Sub-90 fs dissipative-soliton Erbium-doped fiber lasers operating at 16 μm band

“…Clearly, the spectrum broadens with increasing the pump power. This is consistent well with theoretical predictions [27,28] and experiments [29]. As the pump power increase from 750 to 1215 mW, the spectral width continuously broadens with the output power growing up (see Fig.…”

Design and Applications of In-Cavity Pulse Shaping by Spectral Sculpturing in Mode-Locked Fibre Lasers

“…Furthermore, the possibility to achieve both parabolic self-similar and triangular pulse shaping in a mode-locked fibre laser via adjustment of the net normal dispersion and integrated gain of the cavity was reported in [24]. In [25], careful control of the gain/loss parameters of a net-normal dispersion laser cavity provided the means of achieving switching among Gaussian pulse, DS and similariton pulse solutions in the cavity. All of these techniques, however, require manual tuning of some physical parameters of the cavity.…”

Chirped pulse amplified dissipative-soliton Erbium-doped fiber lasers

“…Thus, it is possible to generate DSs in our dispersion-managed cavity, and DSs are finally generated when the net dispersion is increased to 0.12 ps 2 by decreasing the length of fibers with anomalous dispersion in the cavity. Note that this value of net dispersion is in the range of DS generation, as reported by many other experiments [13,[24][25][26][27][28]. A filter is usually employed in a DS laser to offer an additional amplitude modulation to generate DSs.…”

“…A filter is usually employed in a DS laser to offer an additional amplitude modulation to generate DSs. In our DS laser, the filter is formed by the narrow gain bandwidth of the EDF [13,[24][25][26][27][28]. In the laser, mode locking is initiated by nonlinear polarization rotation, which relies on intensity-dependent rotation of an elliptical polarization state in a length of optical fiber.…”