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Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

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Hanbury Brown-Twiss effect with electromagnetic waves.

T Hassinen¹, J Tervo, T Setälä

¹Department of Physics and Mathematics, University of Eastern Finland, PO Box 111, FI-80101 Joensuu, Finland.

|September 22, 2011

Summary

The Hanbury Brown-Twiss experiment, when considering light

Area of Science:

Quantum Optics
Classical Electrodynamics

Background:

The Hanbury Brown-Twiss experiment demonstrates photon bunching.
Scalar wave theory has been used to analyze the experiment.

Purpose of the Study:

To analyze the Hanbury Brown-Twiss experiment in the space-frequency domain.
To incorporate the vectorial nature of radiation into the analysis.
To investigate the role of polarization in photon correlations.

Main Methods:

Analysis in the space-frequency domain.
Consideration of the vectorial nature of electromagnetic radiation.
Statistical analysis of Gaussian random vector fields.

Main Results:

The degree of electromagnetic coherence characterizes photoelectron current fluctuations.

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Modulations of optical intensity and polarization in two-beam interference are interpreted.

The degree of cross-polarization can diverge.

Polarization state effects on intensity fluctuation correlations are evaluated.

Conclusions:

Vectorial analysis confirms scalar theory findings for photoelectron current fluctuations.
Polarization plays a crucial role in intensity correlations.
The degree of cross-polarization is a significant factor in understanding coherence.