Zobrazeno 1 - 10
of 406
pro vyhledávání: '"Poulton C"'
We report a theoretical study of Stimulated Brillouin Scattering (SBS) in general anisotropic media, incorporating the effects of both acoustic strain and local rotation in all calculations. We apply our general theoretical framework to compute the S
Externí odkaz:
http://arxiv.org/abs/1809.08033
Publikováno v:
Phys. Rev. B 96, 064114 (2017)
We present a rigorous procedure for evaluating the photoelastic coefficients of a layered medium where the periodicity is smaller than the wavelengths of all optical and acoustic fields. Analytical expressions are given for the coefficients of a comp
Externí odkaz:
http://arxiv.org/abs/1702.01581
Autor:
Smith, M. J. A., Wolff, C., de Sterke, C. Martijn, Lapine, M., Kuhlmey, B. T., Poulton, C. G.
Silicon is an ideal material for on-chip applications, however its poor acoustic properties limit its performance for important optoacoustic applications, particularly for Stimulated Brillouin Scattering (SBS). We theoretically show that silicon inve
Externí odkaz:
http://arxiv.org/abs/1608.04962
Autor:
Smith, M. J. A., Kuhlmey, B. T., de Sterke, C. Martijn, Wolff, C., Lapine, M., Poulton, C. G.
We compute the SBS gain for a metamaterial comprising a cubic lattice of dielectric spheres suspended in a background dielectric material. Theoretical methods are presented to calculate the optical, acoustic, and opto-acoustic parameters that describ
Externí odkaz:
http://arxiv.org/abs/1606.03193
Autor:
Smith, M. J. A., Kuhlmey, B. T., de Sterke, C. Martijn, Wolff, C., Lapine, M., Poulton, C. G.
Publikováno v:
Opt. Lett. 41(10), 2338-2341 (2016)
Using full opto-acoustic numerical simulations, we demonstrate enhancement and suppression of the SBS gain in a metamaterial comprising a subwavelength cubic array of dielectric spheres suspended in a dielectric background material. We develop a gene
Externí odkaz:
http://arxiv.org/abs/1602.03222
Autor:
Smith, M. J. A., Kuhlmey, B. T., de Sterke, C. Martijn, Wolff, C., Lapine, M., Poulton, C. G.
We demonstrate a controllable enhancement in the electrostrictive properties of a medium using dilute composite artificial materials. Analytical expressions for the composite electrostriction are derived and used to show that enhancement, tunability
Externí odkaz:
http://arxiv.org/abs/1504.04932
We derive formal selection rules for Stimulated Brillouin Scattering (SBS) in structured waveguides. Using a group-theoretical approach, we show how the waveguide symmetry determines which optical and acoustic modes interact for both forward and back
Externí odkaz:
http://arxiv.org/abs/1410.8639
Akademický článek
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Akademický článek
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Autor:
Dent, W. R. F., Hovey, G., Dewdney, P. E., Burgess, T., Willis, A. G., Lightfoot, J. F., Jenness, T., Leech, J., Matthews, H. E., Heyer, M., Poulton, C.
We present a new large-scale survey of J=3-2 12CO emission covering 4.8 square degrees around the Rosette Nebula. Approximately 2000 compact clumps are identified, with a spatially-invariant power law mass distribution index of -1.8. Most of the inne
Externí odkaz:
http://arxiv.org/abs/0902.4138