Collection of Emission from an Oscillating Dipole Inside a Sphere: Analytic Integration Over a Circular Aperture
Abstract
We describe a method for analytically integrating, over a circular aperture, the emission from an oscillating dipole inside a dielectric sphere. The model is useful for investigating fluorescence, Raman, or other emission from molecules inside spherical particles or droplets. The analysis is performed for two cases: (1) the dipole emits from a fixed orientation, and (2) the dipole emits from all orientations. In both cases, all light entering the aperture is collected. The second case models the collection of emission from a molecule that is excited repeatedly; after each excitation, it rotates to a random orientation before emitting. These results are applicable to single-molecule detection techniques employing microdroplets and to other techniques for characterizing microparticles through the use of luminescence or inelastic scattering.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1997
- Accession Number
- ADA335254
Entities
People
- J. D. Pendleton
- Steven C. Hill
Organizations
- United States Army Research Laboratory