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Radiometry and Radiation Efficiency of Twisted Gaussian Schell-Model Sources

  • GENERAL AND PHYSICAL OPTICS
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Abstract

Wavefields endowed with the coherence-induced property of optical twist have recently attracted a good deal of theoretical and experimental attention. We present the generalized radiometric theory of fields generated by twisted Gaussian Schell-model sources. The effects introduced by the novel, rotationally symmetric, twist phenomenon in the radiant intensity, generalized radiance, radiant emittance (irradiance), and the radiation efficiency are assessed. The radiance becomes directionally skewed as a result of the twist, whereas the radiant intensity remains axially symmetric. The twist reduces the radiation efficiency and broadens the radiation distribution, in agreement with the notion that the twist decreases the effective coherence. Several special cases, such as quasihomogeneous sources, are analyzed in detail. The radiometric results, which are physically consistent with the superposition models of twisted sources, are demonstrated by illustrative examples.

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Authors and Affiliations

  1. Royal Institute of Technology, Department of Physics-Optics, SE-100 44 Stockholm, Sweden

    Petter Östlund & Ari T. Friberg

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  1. Petter Östlund
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  2. Ari T. Friberg
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Correspondence to Ari T. Friberg.

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Östlund, P., Friberg, A.T. Radiometry and Radiation Efficiency of Twisted Gaussian Schell-Model Sources. OPT REV 8, 1–8 (2001). https://doi.org/10.1007/s10043-001-0001-0

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  • DOI: https://doi.org/10.1007/s10043-001-0001-0

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