197 citations · 414 across the 9 of their papers we have counts for
9 papers
Design of free-space couplers for suspended triangular nano-beam waveguides
J. P. Hadden, Cobi Maynard, Daryl M. Beggs +2
Photonic waveguides with triangular cross section are being investigated for material systems such as diamond, glasses and gallium nitride, which lack easy options to create conven…
99% beta factor and directional coupling of quantum dots to fast light in photonic crystal waveguides determined by hyperspectral imaging
L. Scarpelli, B. Lang, F. Masia +8
Spontaneous emission from excitonic transitions in InAs/GaAs quantum dots embedded in photonic crystal waveguides at 5K into non-guided and guided modes is determined by direct hyp…
Optimised photonic crystal waveguide for chiral light-matter interactions
Ben Lang, Ruth Oulton, Daryl M. Beggs
We present slow-light photonic crystal waveguide designs that provide a 8.6 improvement of the local density of optical states at a fully chiral point over previous designs…
Time reversal constraint limits unidirectional photon emission in slow-light photonic crystals
Ben Lang, Daryl M. Beggs, Ruth Oulton
Photonic crystal waveguides are known to support C-points - point-like polarisation singularities with local chirality. Such points can couple with dipole-like emitters to produce…
The stability of polarisation singularities in disordered photonic crystal waveguides
Ben Lang, Daryl M. Beggs, Andrew B. Young +2
The effects of short range disorder on the polarisation characteristics of light in photonic crystal waveguides were investigated using finite difference time domain simulations wi…
Polarization engineering in photonic crystal waveguides for spin-photon entanglers
Andrew B. Young, Arthur Thijssen, Daryl M. Beggs +5
By performing a full analysis of the projected local density of states (LDOS) in a photonic crystal waveguide, we show that phase plays a crucial role in the symmetry of the light-…
Ultrafast tuneable optical delay line based on indirect photonic transitions
Daryl M. Beggs, Isabella H. Rey, Tobias Kampfrath +3
We introduce the concept of an indirect photonic transition and demonstrate its use in a dynamic delay line to alter the group velocity of an optical pulse. Operating on an ultrafa…
Ultrafast tilting of the dispersion of a photonic crystal and adiabatic spectral compression of light pulses
Daryl M. Beggs, Thomas F. Krauss, L. Kuipers +1
We demonstrate, by theory and experiment, the ultrafast tilting of the dispersion curve of a photonic-crystal waveguide following the absorption of a femtosecond pump pulse. By sha…
Measuring the spatial extent of individual localized photonic states
Marko Spasenovic, Daryl M. Beggs, Philippe Lalanne +3
We measure the spatial extent of individual localized photonic states in a slow-light photonic crystal waveguide. The size of the states is measured by perturbing each state indivi…