Whispering-gallery modes observed in elastic scattering from submerged high-refractive-index silica microspheres

Hasan Yilmaz; Huzeyfe Yilmaz; Mehmet Selman Tamer; Oguzhan Gürlü; Mohammed Sharif Murib; Ali Serpengüzel

doi:10.1117/1.OE.56.12.126110

27 December 2017 Whispering-gallery modes observed in elastic scattering from submerged high-refractive-index silica microspheres

Hasan Yilmaz, Huzeyfe Yilmaz, Mehmet Selman Tamer, Oguzhan Gürlü, Mohammed Sharif Murib, Ali Serpengüzel

Author Affiliations +

Funded by: Türkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK), European Commission (EC)

Optical Engineering, Vol. 56, Issue 12, 126110 (December 2017). https://doi.org/10.1117/1.OE.56.12.126110

Abstract

The effect of the discrete values of the refractive index of the surrounding medium on the spectral behavior of the whispering-gallery modes (WGMs) in the elastic scattering spectra of high-refractive-index silica microspheres submerged in fluids, such as air, water, and glycerol, is studied. The elastic scattering spectral measurements, as well as the spectral autocorrelation analysis of these elastic scattering spectra show that the spectral-mode spacing, the spectral-mode density, and the spectral-mode definition of the WGMs decrease as the refractive index of the surrounding fluid increases. We believe that this work opens up the way for optofluidic applications of high-refractive-index silica microsphere-based guided wave optics.

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Hasan Yilmaz, Huzeyfe Yilmaz, Mehmet Selman Tamer, Oguzhan Gürlü, Mohammed Sharif Murib, and Ali Serpengüzel "Whispering-gallery modes observed in elastic scattering from submerged high-refractive-index silica microspheres," Optical Engineering 56(12), 126110 (27 December 2017). https://doi.org/10.1117/1.OE.56.12.126110

Received: 26 May 2017; Accepted: 10 October 2017; Published: 27 December 2017

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