Imperial College London

DrMarkOxborrow

Faculty of EngineeringDepartment of Materials

Reader in Functional Microwave Materials & Devices
 
 
 
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Contact

 

+44 (0)20 7594 1410m.oxborrow

 
 
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Location

 

2.04Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

51 results found

Oxborrow M, 2007, How to simulate the whispering-gallery-modes of dielectric microresonators in FEMLAB/COMSOL - art. no. 64520J, Conference on Laser Resonators and Beam Control IX, Publisher: SPIE-INT SOC OPTICAL ENGINEERING, Pages: J4520-J4520, ISSN: 0277-786X

Conference paper

Bourgeois P-Y, Benmessai K, Oxborrow M, Tobar ME, Bazin N, Hartnett JG, Kersale Y, Giordano Vet al., 2007, The Fe3+: Al2O3 whispering gallery mode maser oscillator, Joint IEEE International Frequency Control Symposium/21st European Frequency and Time Forum, Publisher: IEEE, ELECTRON DEVICES SOC & RELIABILITY GROUP, Pages: 1032-+

Conference paper

Oxborrow M, 2006, Whispering gallery oscillator, GB 2425221 B

Patent

Oxborrow M, 2006, Ex-house 2D finite-element simulation of the whispering-gallery modes of arbitrarily shaped axisymmetric electromagnetic resonators

It is described, explicitly, how a popular, commercially-available softwarepackage for solving partial-differential-equations (PDEs), as based on thefinite-element method (FEM), can be configured to calculate the frequencies andfields of the whispering-gallery (WG) modes of axisymmetric dielectricresonators. The approach is traceable; it exploits the PDE-solver's ability toaccept the definition of solutions to Maxwell's equations in so-called `weakform'. Associated expressions and methods for estimating a WG mode's volume,filling factor(s) and, in the case of closed(open) resonators, its wall(radiation) loss, are provided. As no transverse approxi-mation is imposed, theapproach remains accurate even for so-called quasi-TM and -TE modes of low,finite azimuthal mode order. The approach's generality and utility aredemonstrated by modeling several non-trivial structures: (i)two differentoptical microcavities [one toroidal made of silica, the other an AlGaAsmicrodisk]; (ii) a 3rd-order microwave Bragg cavity containing alumina layers(iii) two different cryogenic sapphire X-band microwave resonators. By fittingone of the latter to a set of measured resonance frequencies, the dielectricconstants of sapphire at liquid-helium temperature have been estimated.

Journal article

Bourgeois P-Y, Oxborrow M, Tobar ME, Bazin N, Kersale Y, Giordano Vet al., 2006, Maser oscillation from electronic spin resonance in a cryogenic sapphire frequency standard, 9th International Conference on Squeezed States and Uncertainty Relations (ICSSUR 05), Publisher: WORLD SCIENTIFIC PUBL CO PTE LTD, Pages: 1606-1612, ISSN: 0217-9792

Conference paper

Benmessai K, Bourgeois P-Y, Oxborrow M, Bazin N, Kersale Y, Giordano Vet al., 2006, Study of paramagnetic properties of Fe3(+) ions to realizing whispering gallery maser oscillator, IEEE International Frequency Control Symposium and Exposition, Publisher: IEEE, Pages: 823-+

Conference paper

Bourgeois PY, Bazin N, Kersale Y, Giordano V, Tobar ME, Oxborrow Met al., 2005, Maser oscillation in a whispering-gallery-mode microwave resonator, APPLIED PHYSICS LETTERS, Vol: 87, ISSN: 0003-6951

Journal article

Oxborrow M, Sinclair AG, 2005, Single-photon sources, CONTEMPORARY PHYSICS, Vol: 46, Pages: 173-206, ISSN: 0010-7514

Journal article

Bourgeois PY, Oxborrow M, Tobar ME, Bazin N, Kersale Y, Benmessai K, Giordano Vet al., 2005, Zero-field Fe3+ : Sapphire whispefing-gallery-mode solid-state MASER oscillator, IEEE International Frequency Control Symposium and Exposition, Publisher: IEEE, Pages: 355-362, ISSN: 1075-6787

Conference paper

Guhr T, Gronqvist J, Sondergaard N, Oxborrow M, Schaadt K, Ellegaard Cet al., 2005, A certain localization effect in coupled systems and messages from the crystal sphere, Workshop on Nuclei and Mesoscopic Physics, Publisher: AMER INST PHYSICS, Pages: 160-170, ISSN: 0094-243X

Conference paper

Sondergaard N, Guhr T, Oxborrow M, Schaadt K, Ellegaard Cet al., 2004, Counting function for a sphere of anisotropic quartz, PHYSICAL REVIEW E, Vol: 70, ISSN: 1539-3755

Journal article

Webster SA, Oxborrow M, Gill P, 2004, Subhertz-linewidth Nd : YAG laser, OPTICS LETTERS, Vol: 29, Pages: 1497-1499, ISSN: 0146-9592

Journal article

Gill P, Barwood GP, Klein HA, Huang G, Margolis HS, Lea SN, Oxborrow M, Webster SAet al., 2004, Optical clocks and ultra-stable optical oscillators for navigation, space science and astronomy, 5th International Conference on Space Optics (ICSO 2004), Publisher: ESA PUBLICATIONS DIVISION C/O ESTEC, Pages: 625-+, ISSN: 0379-6566

Conference paper

Schaadt K, Guhr T, Ellegaard C, Oxborrow Met al., 2003, Experiments on elastomechanical wave functions in chaotic plates and their statistical features, PHYSICAL REVIEW E, Vol: 68, ISSN: 2470-0045

Journal article

Bertelsen P, Ellegaard C, Guhr T, Oxborrow M, Schaadt Ket al., 1999, Measurement of parametric correlations in spectra of resonating quartz blocks, PHYSICAL REVIEW LETTERS, Vol: 83, Pages: 2171-2174, ISSN: 0031-9007

Journal article

Ellegaard C, Guhr T, Lindemann K, Nygard J, Oxborrow Met al., 1996, Symmetry breaking and spectral statistics of acoustic resonances in quartz blocks, PHYSICAL REVIEW LETTERS, Vol: 77, Pages: 4918-4921, ISSN: 0031-9007

Journal article

Mihalkovic M, Zhu WJ, Henley CL, Oxborrow Met al., 1996, Icosahedral quasicrystal decoration models .1. Geometrical principles, PHYSICAL REVIEW B, Vol: 53, Pages: 9002-9020, ISSN: 0163-1829

Journal article

ELLEGAARD C, GUHR T, LINDEMANN K, LORENSEN HQ, NYGARD J, OXBORROW Met al., 1995, SPECTRAL STATISTICS OF ACOUSTIC RESONANCES IN ALUMINUM BLOCKS, PHYSICAL REVIEW LETTERS, Vol: 75, Pages: 1546-1549, ISSN: 0031-9007

Journal article

NEWMAN MEJ, HENLEY CL, OXBORROW M, 1995, CONSTRUCTION OF PERIODIC APPROXIMANTS FOR THE CANONICAL-CELL MODEL OF A QUASI-CRYSTAL, PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, Vol: 71, Pages: 991-1013, ISSN: 0141-8637

Journal article

OXBORROW M, HENLEY CL, 1993, RANDOM SQUARE-TRIANGLE TILINGS - A MODEL FOR TWELVEFOLD-SYMMETRICAL QUASI-CRYSTALS, PHYSICAL REVIEW B, Vol: 48, Pages: 6966-6998, ISSN: 0163-1829

Journal article

OXBORROW M, HENLEY CL, 1993, RANDOM SQUARE TRIANGLE TILINGS, 4TH INTERNATIONAL CONF ON QUASICRYSTALS, Publisher: ELSEVIER SCIENCE BV, Pages: 210-214, ISSN: 0022-3093

Conference paper

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