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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 37, Iss. 22 — Nov. 15, 2012
  • pp: 4762–4764

Terahertz tuning of whispering gallery modes in a PDMS stand-alone, stretchable microsphere

Ramgopal Madugani, Yong Yang, Jonathan M Ward, John Daniel Riordan, Sara Coppola, Veronica Vespini, Simonetta Grilli, Andrea Finizio, Pietro Ferraro, and Síle Nic Chormaic  »View Author Affiliations


Optics Letters, Vol. 37, Issue 22, pp. 4762-4764 (2012)
http://dx.doi.org/10.1364/OL.37.004762


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Abstract

We report on tuning the optical whispering gallery modes (WGMs) in a poly dimethyl siloxane-based (PDMS) microsphere resonator by more than 1 THz. The PDMS microsphere system consists of a solid spherical resonator directly formed with double stems on either side. The stems act like tie-rods for simple mechanical stretching of the microresonator, resulting in tuning of the WGMs by one free spectral range. Further investigations demonstrate that the WGM shift has a higher sensitivity (0.13nm/μN) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.

© 2012 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(140.3945) Lasers and laser optics : Microcavities
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: August 23, 2012
Revised Manuscript: October 11, 2012
Manuscript Accepted: October 11, 2012
Published: November 14, 2012

Citation
Ramgopal Madugani, Yong Yang, Jonathan M Ward, John Daniel Riordan, Sara Coppola, Veronica Vespini, Simonetta Grilli, Andrea Finizio, Pietro Ferraro, and Síle Nic Chormaic, "Terahertz tuning of whispering gallery modes in a PDMS stand-alone, stretchable microsphere," Opt. Lett. 37, 4762-4764 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-22-4762


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