Scattering of light from single spheres placed behind a glass–air interface with light incident through the glass is examined. This scattering is investigated for both <i>p</i>- and <i>s</i>-polarized light incident at angles below the glass–air critical angle. The intensity of light scattered into the air half-space from each sphere is measured as a function of scattering angle, and this response is compared <i>in situ</i> with the background scatter produced by the planar substrate. A detailed comparison between data and established theory are thereby obtained. This system is of interest in the field of optical biosensing.
© 2003 Optical Society of America
Michael J. Jory, Elaine A. Perkins, and J. Roy Sambles, "Light scattering by microscopic spheres behind a glass-air interface," J. Opt. Soc. Am. A 20, 1589-1594 (2003)