Far-field analysis of spectral shifts in Gaussian Schell-model beams propagating through media with arbitrary refractive properties

Zhisong Tong, Olga Korotkova

Research output: Contribution to journalArticle

Abstract

We derive the formula for the frequency shift of both scalar and electromagnetic Gaussian Schell-model beams propagating in deterministic isotropic media characterized by the real refractive index n (no gain/absorption). Remarkably, the far-field spectral shift in the paraxial region does not depend either on the rms width of the degree of coherence of the source or on the rms width of its spectral density, or on the refractive index n. It is solely a function of the central frequency and the frequency spread of the source.

Original languageEnglish (US)
Article number095708
JournalJournal of Optics
Volume12
Issue number9
DOIs
StatePublished - Sep 2010

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far fields
Refractive index
refractivity
isotropic media
Spectral density
shift
frequency shift
Light sources
electromagnetism
scalars

Keywords

  • Gaussian Schell-model beams
  • Paraxial region
  • Spectral shifts

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials

Cite this

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abstract = "We derive the formula for the frequency shift of both scalar and electromagnetic Gaussian Schell-model beams propagating in deterministic isotropic media characterized by the real refractive index n (no gain/absorption). Remarkably, the far-field spectral shift in the paraxial region does not depend either on the rms width of the degree of coherence of the source or on the rms width of its spectral density, or on the refractive index n. It is solely a function of the central frequency and the frequency spread of the source.",
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AB - We derive the formula for the frequency shift of both scalar and electromagnetic Gaussian Schell-model beams propagating in deterministic isotropic media characterized by the real refractive index n (no gain/absorption). Remarkably, the far-field spectral shift in the paraxial region does not depend either on the rms width of the degree of coherence of the source or on the rms width of its spectral density, or on the refractive index n. It is solely a function of the central frequency and the frequency spread of the source.

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