Abstract

A single-input whispering gallery optical microbubble resonator is presented. Spherical microbubbles with diam eters less than $100\mathrm{\mu m}$, micrometer-sized wall thicknesses, and a single opening or input were fabricated by heating the tapered tip of a pressurized glass capillary using a ${\mathrm{CO}}_2$ laser. Optical whispering gallery modes with Q factors of $\sim {10}^5$ were obtained. The bubbles were filled with water and mode shifts of $\sim 20\mathrm{GHz}$ were observed. Fano-type resonances were detected when the coupling optical fiber diameter was less than $1\mathrm{\mu m}$, causing the microresonator to switch from being a band-stop filter to a bandpass filter. Larger bubbles with submicrometer wall thickness were also fabricated.

© 2011 Optical Society of America

Optical microbubble resonator

M. Sumetsky, Y. Dulashko, and R. S. Windeler
Opt. Lett. 35(7) 898-900 (2010)

High Q silica microbubble resonators fabricated by arc discharge

S. Berneschi, D. Farnesi, F. Cosi, G. Nunzi Conti, S. Pelli, G. C. Righini, and S. Soria
Opt. Lett. 36(17) 3521-3523 (2011)

Observation of two-photon fluorescence for Rhodamine 6G in microbubble resonators

Gregory A. Cohoon, Khanh Kieu, and Robert A. Norwood
Opt. Lett. 39(11) 3098-3101 (2014)

Tuning whispering gallery modes using internal aerostatic pressure

Rico Henze, Tom Seifert, Jonathan Ward, and Oliver Benson
Opt. Lett. 36(23) 4536-4538 (2011)

A tellurite glass optical microbubble resonator

J. Yu, J. Zhang, R. Wang, A. Li, M. Zhang, S. Wang, P. Wang, J. M. Ward, and S. Nic Chormaic
Opt. Express 28(22) 32858-32868 (2020)