Whispering gallery modes excited by two–photon absorption induced by an evanescent field

Smitha Kuriakose; Dru Morrish; Xiaosong Gan; James W. M. Chon; Min Gu

doi:10.1117/12.682298

11 September 2006 Whispering gallery modes excited by two-photon absorption induced by an evanescent field

Smitha Kuriakose, Dru Morrish, Xiaosong Gan, James W. M. Chon, Min Gu

Proceedings Volume 6326, Optical Trapping and Optical Micromanipulation III; 63260D (2006) https://doi.org/10.1117/12.682298
Event: SPIE Optics + Photonics, 2006, San Diego, California, United States

Abstract

In this paper, we report the excitation of whispering gallery modes (WGM) using a focused evanescent field. A focused evanescent field generated by total internal reflection at the cover glass-air interface was used to induce two-photon absorption in fluorescent polymer microcavities. By using a focused evanescent field it was possible to effectively couple light into the whispering gallery modes by the efficient overlap between the excitation volume and the cavity modes. The recorded whispering gallery mode spectra using an evanescent wave showed up to 38% enhancement in the spectral characteristics.

Citation Download Citation

Smitha Kuriakose, Dru Morrish, Xiaosong Gan, James W. M. Chon, and Min Gu "Whispering gallery modes excited by two-photon absorption induced by an evanescent field", Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 63260D (11 September 2006); https://doi.org/10.1117/12.682298

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