E. J. R. Kelleher

TL;DR: A mechanism, based on edge states within the bandgap, is proposed, responsible for the wideband nonlinear optical absorption exhibited by the few-layer MoS₂ sample, despite operating at photon energies lower than the material bandgap.

TL;DR: In this paper, a free-standing molybdenum diselenide (MoSe2) saturable absorber was fabricated by embedding liquid-phase exfoliated few-layer MoSe2 flakes into a polymer film, which is used to Q-switch fiber lasers based on ytterbium (Yb), erbium(Er) and thulium (Tm) gain fiber, producing trains of microsecond-duration pulses with kilohertz repetition rates at 1060 nm, 1566 nm and 1924 nm, respectively.

TL;DR: In this paper, the authors catalog and review the nonlinear optical properties of few-layer molybdenum disulfide (MoS2) and summarize recent progress in processing and integration into saturable absorber devices, and comment on the current status and future perspectives of MoS2-based pulsed lasers.

TL;DR: Experimental observation of scalar and cross-phase modulation instabilities by pumping a highly birefringent photonic crystal fiber in the normal dispersion regime at 45° to its principal polarization axes in excellent agreement with phase-matching arguments and numerical simulations.

TL;DR: In this article, the authors demonstrate passive mode-locking of a Raman fiber laser at 1.12 μm using a nanotube-based saturable absorber, and a regular train of pulses, with a duration of 236 ps at the fundamental repetition frequency of the cavity, are generated by the all-normal dispersion oscillator.