Thermo-optical resonance locking of an optically trapped salt-water microdroplet

Marc Guillon; Rachael E.H. Miles; Jonathan P. Reid; David McGloin

doi:10.1088/1367-2630/11/10/103041

Thermo-optical resonance locking of an optically trapped salt-water microdroplet

Marc Guillon^*, Rachael E.H. Miles, Jonathan P. Reid, David McGloin

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

Abstract

We demonstrate that it is possible to lock the radius of an optically trapped salt-water microdroplet to the n = 1 whispering gallery resonances (WGRs) at the trapping laser wavelength. The optical properties of the droplet are determined using stimulated Raman scattering. The droplet is in thermodynamic equilibrium with the surrounding vapour and the proposed locking mechanism consists of a balance between bulk heating and WGR heating. Raman measurements allow the size parameter (nka) of the droplet to be determined with a precision of ∼10^-5and the resonance linewidth to be estimated.

Original language	English
Article number	103041
Number of pages	11
Journal	New Journal of Physics
Volume	11
DOIs	https://doi.org/10.1088/1367-2630/11/10/103041
Publication status	Published - 26 Oct 2009

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title = "Thermo-optical resonance locking of an optically trapped salt-water microdroplet",

abstract = "We demonstrate that it is possible to lock the radius of an optically trapped salt-water microdroplet to the n = 1 whispering gallery resonances (WGRs) at the trapping laser wavelength. The optical properties of the droplet are determined using stimulated Raman scattering. The droplet is in thermodynamic equilibrium with the surrounding vapour and the proposed locking mechanism consists of a balance between bulk heating and WGR heating. Raman measurements allow the size parameter (nka) of the droplet to be determined with a precision of ∼10-5and the resonance linewidth to be estimated.",

author = "Marc Guillon and Miles, {Rachael E.H.} and Reid, {Jonathan P.} and David McGloin",

note = "Acknowledgements: MG acknowledges the University of Dundee for financial support. DM is a Royal Society University Research Fellow. REHM and JPR acknowledge Dr Laura Mitchem for preliminary measurements that contributed to this work. The authors also acknowledge the EPSRC for financial support for this research and for Leader Fellowship funding for JPR. The authors are finally grateful to Dr Knox for helpful and stimulating discussions.",

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doi = "10.1088/1367-2630/11/10/103041",

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T1 - Thermo-optical resonance locking of an optically trapped salt-water microdroplet

AU - Guillon, Marc

AU - Miles, Rachael E.H.

AU - Reid, Jonathan P.

AU - McGloin, David

N1 - Acknowledgements: MG acknowledges the University of Dundee for financial support. DM is a Royal Society University Research Fellow. REHM and JPR acknowledge Dr Laura Mitchem for preliminary measurements that contributed to this work. The authors also acknowledge the EPSRC for financial support for this research and for Leader Fellowship funding for JPR. The authors are finally grateful to Dr Knox for helpful and stimulating discussions.

PY - 2009/10/26

Y1 - 2009/10/26

N2 - We demonstrate that it is possible to lock the radius of an optically trapped salt-water microdroplet to the n = 1 whispering gallery resonances (WGRs) at the trapping laser wavelength. The optical properties of the droplet are determined using stimulated Raman scattering. The droplet is in thermodynamic equilibrium with the surrounding vapour and the proposed locking mechanism consists of a balance between bulk heating and WGR heating. Raman measurements allow the size parameter (nka) of the droplet to be determined with a precision of ∼10-5and the resonance linewidth to be estimated.

AB - We demonstrate that it is possible to lock the radius of an optically trapped salt-water microdroplet to the n = 1 whispering gallery resonances (WGRs) at the trapping laser wavelength. The optical properties of the droplet are determined using stimulated Raman scattering. The droplet is in thermodynamic equilibrium with the surrounding vapour and the proposed locking mechanism consists of a balance between bulk heating and WGR heating. Raman measurements allow the size parameter (nka) of the droplet to be determined with a precision of ∼10-5and the resonance linewidth to be estimated.

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DO - 10.1088/1367-2630/11/10/103041

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VL - 11

JO - New Journal of Physics

JF - New Journal of Physics

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Thermo-optical resonance locking of an optically trapped salt-water microdroplet

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