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Infrared (IR) Spectroscopy: Overview01:09

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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
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Published on: September 5, 2019

Photon correlation spectroscopy with incoherent light.

D Salerno1, D Brogioli, F Croccolo

  • 1Dipartimento di Medicina Sperimentale, Università degli Studi di Milano-Bicocca, Monza (MI), Italy. domenico.salerno@unimib.it

Optics Express
|January 26, 2012
PubMed
Summary
This summary is machine-generated.

Photon correlation spectroscopy (PCS) can now utilize short-coherence light sources by modifying their properties. This innovation, using a "skewed-coherence" beam, avoids brightness loss from filtering.

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Area of Science:

  • Optics and Spectroscopy
  • Materials Science

Background:

  • Photon correlation spectroscopy (PCS) traditionally relies on temporally coherent light sources.
  • Standard PCS setups require specific coherence properties for accurate scattered light intensity correlation measurements.

Purpose of the Study:

  • To investigate the feasibility of using short-coherence light sources in PCS.
  • To develop a method for modifying short-coherence light to meet PCS requirements without reducing brightness.

Main Methods:

  • Modification of short-coherence light source properties to achieve a 'skewed-coherence' beam.
  • Application of the modified light beam in photon correlation spectroscopy measurements.

Main Results:

  • Demonstrated successful implementation of PCS with a modified short-coherence light source.
  • The 'skewed-coherence' beam effectively restored the necessary coherence properties for PCS.
  • This method avoids the need for beam filtering, preserving the light source's brightness.

Conclusions:

  • Short-coherence light sources can be effectively utilized in photon correlation spectroscopy.
  • The 'skewed-coherence' approach offers a viable alternative to traditional methods, enhancing experimental efficiency.