An analysis of the emitted light distribution for a single emitter located at the planar interface of two optical media was performed. The interface of a varying refractive index substrate with air was considered, which is a common case in luminescence microscopy (spectroscopy) experiments. A modification of the radiative recombination rate induced by the variation of the substrate together with the emitted radiation spatial redistribution were taken into account. Simulation results show that the collection efficiency of the emitted light can vary several times depending on the substrate choice and the emitter intrinsic quantum efficiency.
© 2008 Optical Society of America
Original Manuscript: May 28, 2008
Revised Manuscript: July 7, 2008
Manuscript Accepted: July 7, 2008
Published: August 6, 2008
Vol. 3, Iss. 10 Virtual Journal for Biomedical Optics
Ilya Sychugov, Hiroo Omi, and Yoshihiro Kobayashi, "On the role of substrate in light-harvesting experiments," Opt. Lett. 33, 1807-1809 (2008)