145 citations · 535 across the 9 of their papers we have counts for
9 papers
Scalar Nanosecond Pulse Generation in a Nanotube Mode-Locked Environmentally Stable Fiber Laser
R. I. Woodward, E. J. R. Kelleher, D. Popa +5
We report an environmentally stable nanotube mode-locked fibre laser producing linearly-polarized, nanosecond pulses. A simple all-polarization-maintaining fibre ring cavity is use…
Dispersion engineering of mode-locked fibre lasers
R. I. Woodward
Mode-locked fibre lasers are important sources of ultrashort pulses, where stable pulse generation is achieved through a balance of periodic amplitude and phase evolutions. A range…
Watt-level dysprosium fiber laser at 3.15 μm with 73% slope efficiency
R. I. Woodward, M. R. Majewski, G. Bharathan +3
Rare-earth-doped fiber lasers are emerging as promising high-power mid-infrared sources for the 2.6-3.0 μm and 3.3-3.8 μm regions based on erbium and holmium ions. The intermediate…
Generation of 70-fs pulses at 2.86 μm from a mid-infrared fiber laser
R. I. Woodward, D. D. Hudson, A. Fuerbach +1
We propose and demonstrate a simple route to few-optical-cycle pulse generation from a mid-infrared fiber laser through nonlinear compression of pulses from a holmium-doped fiber o…
Genetic algorithm-based control of birefringent filtering for self-tuning, self-pulsing fiber lasers
R. I. Woodward, E. J. R. Kelleher
Polarization-based filtering in fiber lasers is well-known to enable spectral tunability and a wide range of dynamical operating states. This effect is rarely exploited in practica…
Towards 'smart lasers': self-optimisation of an ultrafast pulse source using a genetic algorithm
R. I. Woodward, E. J. R. Kelleher
Short-pulse fibre lasers are a complex dynamical system possessing a broad space of operating states that can be accessed through control of cavity parameters. Determination of tar…
Characterization of the second- and third-order nonlinear optical susceptibilities of monolayer MoS using multiphoton microscopy
R. I. Woodward, R. T. Murray, C. F. Phelan +8
We report second- and third-harmonic generation in monolayer MoS as a tool for imaging and accurately characterizing the material's nonlinear optical properties under…
Dark solitons in laser radiation build-up dynamics
R. I. Woodward, E. J. R. Kelleher
We reveal the existence of slowly-decaying dark solitons in the radiation build-up dynamics of bright pulses in all-normal dispersion mode-locked fiber lasers, numerically modeled…
Surfactant-aided exfoliation of molydenum disulphide for ultrafast pulse generation through edge-state saturable absorption
Richard C. T. Howe, Robert I. Woodward, Guohua Hu +3
We use liquid phase exfoliation to produce dispersions of molybdenum disulphide (MoS2) nanoflakes in aqueous surfactant solutions. The chemical structures of the bile salt surfacta…