Beam shaping for CARS measurements in turbulent environments

Gaetano Magnotti; Andrew D. Cutler; Paul M. Danehy

doi:10.1364/AO.51.004730

Beam shaping for CARS measurements in turbulent environments

Gaetano Magnotti^*, Andrew D. Cutler, Paul M. Danehy

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

This paper describes a new technique to mitigate the effect of beam steering on CARS measurements in turbulent, variable density environments. The new approach combines planar BOXCARS phasematching with elliptical shaping of one of the beams to generate a signal robust to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One experiment investigates the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another experiment, more qualitative, proves the effectiveness of the technique in the presence of severe beam steering due to turbulence.

Original language	English (US)
Pages (from-to)	4730-4741
Number of pages	12
Journal	Applied Optics
Volume	51
Issue number	20
DOIs	https://doi.org/10.1364/AO.51.004730
State	Published - Jul 10 2012
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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title = "Beam shaping for CARS measurements in turbulent environments",

abstract = "This paper describes a new technique to mitigate the effect of beam steering on CARS measurements in turbulent, variable density environments. The new approach combines planar BOXCARS phasematching with elliptical shaping of one of the beams to generate a signal robust to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One experiment investigates the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another experiment, more qualitative, proves the effectiveness of the technique in the presence of severe beam steering due to turbulence.",

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AU - Cutler, Andrew D.

AU - Danehy, Paul M.

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AB - This paper describes a new technique to mitigate the effect of beam steering on CARS measurements in turbulent, variable density environments. The new approach combines planar BOXCARS phasematching with elliptical shaping of one of the beams to generate a signal robust to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One experiment investigates the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another experiment, more qualitative, proves the effectiveness of the technique in the presence of severe beam steering due to turbulence.

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Beam shaping for CARS measurements in turbulent environments

Abstract

ASJC Scopus subject areas

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