Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Beggs, Daryl M."'
Publikováno v:
Journal of Physics D: Applied Physics, 55(47), 474002, 2022
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 conventional rectangular nanophotonic waveguides. The design rules for optic
Externí odkaz:
http://arxiv.org/abs/2207.06157
We present slow-light photonic crystal waveguide designs that provide a $\times$8.6 improvement of the local density of optical states at a fully chiral point over previous designs.
Comment: 4 pages, 3 figures
Comment: 4 pages, 3 figures
Externí odkaz:
http://arxiv.org/abs/1611.00648
Publikováno v:
Phil. Trans. R. Soc. A 374: 20150263 (2016)
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 highly directional emission, from which spin-photon entanglers can be
Externí odkaz:
http://arxiv.org/abs/1601.04591
Publikováno v:
Physical Review A 92, 063819 (2015)
The effects of short range disorder on the polarisation characteristics of light in photonic crystal waveguides were investigated using finite difference time domain simulations with a view to investigating the stability of polarisation singularities
Externí odkaz:
http://arxiv.org/abs/1511.08159
Autor:
Beggs, Daryl M.
This work is concerned with the study of photonic crystals and other topical photonic microstructures, whose optical properties are investigated by solving the Maxwell equations using appropriate theoretical and computational schemes, which are descr
Externí odkaz:
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426477
Autor:
Young, Andrew B., Thijssen, Arthur, Beggs, Daryl M., Androvitsaneas, Petros, Kuipers, L., Rarity, John G., Hughes, Stephen, Oulton, Ruth
Publikováno v:
Phys. Rev. Lett. 115, 153901 (2015)
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-matter interaction. By considering a quantum dot (QD) spin coupled to
Externí odkaz:
http://arxiv.org/abs/1406.0714
Autor:
Beggs, Daryl M., Rey, Isabella H., Kampfrath, Tobias, Rotenberg, Nir, Kuipers, L., Krauss, Thomas F.
Publikováno v:
Phys. Rev. Lett. 108, 213901 (2012)
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 ultrafast time scale, we show continuously tuneable delays of up to 20 ps, us
Externí odkaz:
http://arxiv.org/abs/1211.6597
Publikováno v:
Phys. Rev. Lett. 108, 033902 (2012)
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 shaping the pump-beam cross section with a nanometric shadow mask, differ
Externí odkaz:
http://arxiv.org/abs/1211.5240
Publikováno v:
Physical Review B 86, 155153 (2012)
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 individually through a local electromagnetic interaction with a near-field p
Externí odkaz:
http://arxiv.org/abs/1111.5942
Publikováno v:
In Physica E: Low-dimensional Systems and Nanostructures 2009 41(6):1115-1117
