Photon correlation spectroscopy with incoherent light

Opt Express. 2011 Dec 19;19(27):26416-22. doi: 10.1364/OE.19.026416.

Abstract

Photon correlation spectroscopy (PCS) is based on measuring the temporal correlation of the light intensity scattered by the investigated sample. A typical setup requires a temporally coherent light source. Here, we show that a short-coherence light source can be used as well, provided that its coherence properties are suitably modified. This results in a "skewed-coherence" light beam allowing that restores the coherence requirements. This approach overcomes the usual need for beam filtering, which would reduce the total brightness of the beam.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Computer-Aided Design*
  • Equipment Design
  • Equipment Failure Analysis
  • Lighting / instrumentation*
  • Photons
  • Spectrum Analysis / instrumentation*