Abstract
The emission of light from whispering-gallery modes excited in microscopic spheres is examined. An evanescent wave is produced by total internal reflection of an optical beam at a planar glass–air interface. This evanescent wave is used to excite whispering-gallery modes in single microscopic spheres placed behind the glass–air interface. The intensity of light emitted into the air half-space from such spheres is measured as a function of scattering angle for both p- and s-polarized input beams. These data are compared with a simple theory for the emission from a point source above a planar glass substrate.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Michael J. Jory, Elaine A. Perkins, and J. Roy Sambles
J. Opt. Soc. Am. A 20(8) 1589-1594 (2003)
Vladimir S. Ilchenko, Anatoliy A. Savchenkov, Andrey B. Matsko, and Lute Maleki
J. Opt. Soc. Am. A 20(1) 157-162 (2003)
Scott Lacey and Hailin Wang
Opt. Lett. 26(24) 1943-1945 (2001)