Beam shaping for CARS measurements in turbulent environments

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

Beam shaping for CARS measurements in turbulent environments

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

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

7 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 phase-matching with elliptical shaping of one of the beams to generate a signal insensitive to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One set of experiments investigated the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another set of experiments, more qualitative, proved the effectiveness of the technique in the presence of severe beam steering due to turbulence.

Original language	English (US)
Title of host publication	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
State	Published - 2010
Externally published	Yes
Event	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States Duration: Jan 4 2010 → Jan 7 2010

Other

Other	48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
Country/Territory	United States
City	Orlando, FL
Period	01/4/10 → 01/7/10

ASJC Scopus subject areas

Aerospace Engineering

Cite this

@inproceedings{f46d35e1b7a84c0789909d6ed8038da0,

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 phase-matching with elliptical shaping of one of the beams to generate a signal insensitive to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One set of experiments investigated the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another set of experiments, more qualitative, proved the effectiveness of the technique in the presence of severe beam steering due to turbulence.",

author = "Gaetano Magnotti and Cutler, {Andrew D.} and Danehy, {Paul M.}",

year = "2010",

language = "English (US)",

isbn = "9781600867392",

booktitle = "48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition",

note = "48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition ; Conference date: 04-01-2010 Through 07-01-2010",

}

TY - GEN

T1 - Beam shaping for CARS measurements in turbulent environments

AU - Magnotti, Gaetano

AU - Cutler, Andrew D.

AU - Danehy, Paul M.

PY - 2010

Y1 - 2010

N2 - 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 phase-matching with elliptical shaping of one of the beams to generate a signal insensitive to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One set of experiments investigated the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another set of experiments, more qualitative, proved the effectiveness of the technique in the presence of severe beam steering due to turbulence.

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 phase-matching with elliptical shaping of one of the beams to generate a signal insensitive to beam steering, while keeping the same spatial resolution. Numerical and experimental results are provided to demonstrate the effectiveness of this approach. One set of experiments investigated the effect of beam shaping in the presence of a controlled and well quantified displacement of the beams at the focal plane. Another set of experiments, more qualitative, proved the effectiveness of the technique in the presence of severe beam steering due to turbulence.

UR - http://www.scopus.com/inward/record.url?scp=78649825345&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:78649825345

SN - 9781600867392

BT - 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

T2 - 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition

Y2 - 4 January 2010 through 7 January 2010

ER -

Beam shaping for CARS measurements in turbulent environments

Abstract

Other

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this