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Proceedings Article

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

[+] Author Affiliations
Smitha Kuriakose, Dru Morrish, Xiaosong Gan, James W. M. Chon, Min Gu

Swinburne Univ. of Technology (Australia)

Proc. SPIE 6326, Optical Trapping and Optical Micromanipulation III, 63260D (September 11, 2006); doi:10.1117/12.682298
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From Conference Volume 6326

  • Optical Trapping and Optical Micromanipulation III
  • Kishan Dholakia; Gabriel C. Spalding
  • San Diego, California, USA | August 13, 2006

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.

© (2006) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
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 (September 11, 2006); doi:10.1117/12.682298; http://dx.doi.org/10.1117/12.682298


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