Generation of burst pulses through multimodal interference in a passively mode-locked ytterbium fibre-ring laser

Abstract

We present a passively mode-locked all-fibre ring laser, working in the near-infrared region. The burst of multiple pulses generation is achieved by modifying the transmission output of the saturable absorber. Consequently, multiple modes are stimulated within the laser cavity and multiple wavelengths of operation from 1038 to 1082 nm are accomplished. Furthermore, average power and pulse energy, up to 3.48 mW and 42.9 nJ, are measured and validated. The laser exhibits high-power and wavelength stability at room temperature. In addition, the Raman effect is detected by increasing the power of the pump and up to three stokes are reached; therefore, a broadband spectrum of 140 nm is observed by changing the state of polarization within the cavity.

Generation of similariton-like pulse bunch in erbium-doped fiber laser with hybrid mode-locking

“…For the first time, multi-pulse generation regimes were discovered in soliton lasers, and their formation is due to the limitation of the peak power of pulses in the region of negative dispersion 7 . In the region of positive dispersion, the splitting of pulses is determined by the balance of amplification and losses in the medium and, as a consequence, by factors affecting it: spectral filtering 8 , pump power 9 , and polarisation state 10 . The generation of pulse bunches in the region of positive dispersion for practical application is a more promising direction due to the lack of limitation of the energy of pulses generated in this region.…”

Generation of unconventional burst-pulse bundle in ytterbium-doped double-clad fiber laser based on self-mode-locked and double passively Q-switched technologies

“…The burst pulse output was obtained in allpolarization maintaining ytterbium-doped fiber using nonlinear amplifying loop mirror with the figure-eight configuration [14]. The burst pulse is generated through multimodal interference in a passively mode-locked ytterbium fiber-ring laser [15] or through an AOM-based harmonic mode-locking in a allnormal dispersion ytterbium fiber [16]. The burst pulse is also obtained in a YDF linear compound resonator based on self-Q-switched and self-mode-locked in our previous work [17].…”