Tuning of whispering gallery modes of polymeric micro-spheres and shells using external electric field

Tindaro Ioppolo; Ulas Ayaz; M. Volkan Ötügen

doi:10.1117/12.841033

17 February 2010 Tuning of whispering gallery modes of polymeric micro-spheres and shells using external electric field

Tindaro Ioppolo, Ulas Ayaz, M. Volkan Ötügen

Proceedings Volume 7579, Laser Resonators and Beam Control XII; 75790W (2010) https://doi.org/10.1117/12.841033
Event: SPIE LASE, 2010, San Francisco, California, United States

Abstract

The electrostriction effect on the whispering gallery modes (WGM) of polymeric micro-spheres is investigated analytically and experimentally. Electrostriction is the elastic deformation (mechanical strain) of a dielectric material due the force exerted by an electric field. The elastic deformation also leads to mechanical stress which perturbs the refractive index of the sphere. Both if these effects (strain and stress) induce a shift in the WGM of the dielectric microsphere. We develop analytical expressions for the WGM shift due to electrostriction for solid and thin-walled micro-shells. The analytical results show that detection of electric fields < 1000 V/m is possible using water filled PDMS microshells. The electric field sensitivities for solid spheres, on the other hand, are significantly smaller. Results of experiments carried out using solid polydimethylsiloxane (PDMS) spheres agree well with the analytical prediction. These results are encouraging for future development of WGM-based optical switches/filters as well as electric field sensors.

Citation Download Citation

Tindaro Ioppolo, Ulas Ayaz, and M. Volkan Ötügen "Tuning of whispering gallery modes of polymeric micro-spheres and shells using external electric field", Proc. SPIE 7579, Laser Resonators and Beam Control XII, 75790W (17 February 2010); https://doi.org/10.1117/12.841033

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available