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; Síle Nic Chormaic

doi:10.1364/OL.37.004762

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
, Síle Nic Chormaic

School of Physics

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

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 WGMshift has a higher sensitivity (0.13 nm/μN) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.

Original language	English
Pages (from-to)	4762-4764
Number of pages	3
Journal	Optics Letters
Volume	37
Issue number	22
DOIs	https://doi.org/10.1364/OL.37.004762
Publication status	Published - 15 Nov 2012

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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 WGMshift has a higher sensitivity (0.13 nm/μN) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.",

author = "Ramgopal Madugani and Yong Yang and Ward, \{Jonathan M.\} and Riordan, \{John Daniel\} and Sara Coppola and Veronica Vespini and Simonetta Grilli and Andrea Finizio and Pietro Ferraro and Chormaic, \{S{\'i}le Nic\}",

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T1 - Terahertz tuning of whispering gallery modes in a PDMS stand-alone, stretchable microsphere

AU - Madugani, Ramgopal

AU - Yang, Yong

AU - Ward, Jonathan M.

AU - Riordan, John Daniel

AU - Coppola, Sara

AU - Vespini, Veronica

AU - Grilli, Simonetta

AU - Finizio, Andrea

AU - Ferraro, Pietro

AU - Chormaic, Síle Nic

PY - 2012/11/15

Y1 - 2012/11/15

N2 - 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 WGMshift has a higher sensitivity (0.13 nm/μN) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.

AB - 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 WGMshift has a higher sensitivity (0.13 nm/μN) to an applied force when the resonator is in its maximally stretched state compared to its relaxed state.

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SP - 4762

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JO - Optics Letters

JF - Optics Letters

IS - 22

ER -

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

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