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Experimental observation of whispering gallery modes in novel silicon microcylindrical resonators

Experimental observation of whispering gallery modes in novel silicon microcylindrical resonators
Experimental observation of whispering gallery modes in novel silicon microcylindrical resonators
Microresonators that support whispering gallery modes (WGMs) are ideal systems for studying nonlinear phenomena at low thresholds due to the small mode volumes and the high quality (Q) factors and, as such, they are currently generating much scientific interest [1]. A variety of geometries have been investigated including microspheres, microdisks, toroids and micropillars, using a range of dielectrics and, more recently, semiconductor materials. One of the major challenges in fabricating semiconductor microresonators is obtaining the smooth, defect-free, surfaces required for high Q operation. In this paper, we present a novel approach to fabricating high quality silicon microcylindrical resonators starting from the silicon optical fibre platform [2]. The silicon fibres are fabricated using a high pressure chemical deposition technique to fill silica capillaries with the semiconductor material. This process can be easily modified to fill capillaries of various internal diameters with the deposited material taking on the pristine smoothness of the capillary walls (0.1 nm RMS). As an optical material, silicon is particularly attractive due to its broad transparency window that extends from the telecoms band to the mid-IR (~1.2–7µm), as well as its high optical damage threshold and large nonlinearities.
9781457705328
Vukovic, Natasha
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Healy, Noel
26eec85c-8d12-4f21-a67a-022f8dc2daab
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Murugan, Ganapathy S.
a867686e-0535-46cc-ad85-c2342086b25b
Sparks, Justin
940d8901-dcd0-40be-9bcf-301e0cd8db08
Sazio, Pier
0d6200b5-9947-469a-8e97-9147da8a7158
Badding, John
d1e2327a-54b9-44cd-9de7-812fb7bddd7a
Peacock, Anna C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc
Vukovic, Natasha
3de33ba9-eb8f-4a06-a65e-4ac0a602a157
Healy, Noel
26eec85c-8d12-4f21-a67a-022f8dc2daab
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Murugan, Ganapathy S.
a867686e-0535-46cc-ad85-c2342086b25b
Sparks, Justin
940d8901-dcd0-40be-9bcf-301e0cd8db08
Sazio, Pier
0d6200b5-9947-469a-8e97-9147da8a7158
Badding, John
d1e2327a-54b9-44cd-9de7-812fb7bddd7a
Peacock, Anna C.
685d924c-ef6b-401b-a0bd-acf1f8e758fc

Vukovic, Natasha, Healy, Noel, Horak, Peter, Murugan, Ganapathy S., Sparks, Justin, Sazio, Pier, Badding, John and Peacock, Anna C. (2011) Experimental observation of whispering gallery modes in novel silicon microcylindrical resonators At European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC) 2011, Germany. 22 - 26 May 2011.

Record type: Conference or Workshop Item (Paper)

Abstract

Microresonators that support whispering gallery modes (WGMs) are ideal systems for studying nonlinear phenomena at low thresholds due to the small mode volumes and the high quality (Q) factors and, as such, they are currently generating much scientific interest [1]. A variety of geometries have been investigated including microspheres, microdisks, toroids and micropillars, using a range of dielectrics and, more recently, semiconductor materials. One of the major challenges in fabricating semiconductor microresonators is obtaining the smooth, defect-free, surfaces required for high Q operation. In this paper, we present a novel approach to fabricating high quality silicon microcylindrical resonators starting from the silicon optical fibre platform [2]. The silicon fibres are fabricated using a high pressure chemical deposition technique to fill silica capillaries with the semiconductor material. This process can be easily modified to fill capillaries of various internal diameters with the deposited material taking on the pristine smoothness of the capillary walls (0.1 nm RMS). As an optical material, silicon is particularly attractive due to its broad transparency window that extends from the telecoms band to the mid-IR (~1.2–7µm), as well as its high optical damage threshold and large nonlinearities.

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e-pub ahead of print date: 2011
Additional Information: CE5.3
Venue - Dates: European Conference on Lasers and Electro-Optics (CLEO/Europe-EQEC) 2011, Germany, 2011-05-22 - 2011-05-26
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 343033
URI: http://eprints.soton.ac.uk/id/eprint/343033
ISBN: 9781457705328
PURE UUID: 653702a6-09b9-4099-bd0d-2e1048869d4f
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for Ganapathy S. Murugan: ORCID iD orcid.org/0000-0002-2733-3273
ORCID for Pier Sazio: ORCID iD orcid.org/0000-0002-6506-9266
ORCID for Anna C. Peacock: ORCID iD orcid.org/0000-0002-1940-7172

Catalogue record

Date deposited: 21 Sep 2012 08:38
Last modified: 18 Jul 2017 05:25

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Contributors

Author: Natasha Vukovic
Author: Noel Healy
Author: Peter Horak ORCID iD
Author: Justin Sparks
Author: Pier Sazio ORCID iD
Author: John Badding
Author: Anna C. Peacock ORCID iD

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