Sensing of semi-rough targets embedded in atmospheric turbulence by means of stochastic electromagnetic beams

Sahin, Serkan; Tong, Zhisong; Korotkova, Olga

doi:10.1016/j.optcom.2010.04.076

Cited by 30 publications

(10 citation statements)

References 15 publications

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“…a) LIDARs [5], [11], [34] On the basis of 4x4 tensor approach we have formulated a theory for predicting the second-order statistical properties of electromagnetic Gaussian Schell-model beams in LIDAR systems operating in the clear-air turbulent atmosphere and sensing targets with arbitrary roughness [5,11]. In Fig.…”

Section: Systems Operating In Turbulent Atmospherementioning

confidence: 99%

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Propagation of Stochastic Electromagentic Fields in Atmospheric Turbulence

Korotkova¹

2011

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Standard Form 298 Prescribed by ANSI-Std Z39-18 REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704-0188Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)Air SPONSOR/MONITOR'S ACRONYM(S) SPONSORING/MONITORING AGENCY REPORT NUMBER DISTRIBUTION AVAILABILITY STATEMENT SUPPLEMENTARY NOTES ABSTRACTThe main topics along which the investigations under the grant were made encompassed the development of basic theory of stochastic electromagnetic fields, their free-space propagation, interaction with various media, and optical systems, their scattering from continuous media and particles, their propagation in turbulent media. In addition, deep analysis of existing and development of new techniques which utilize stochastic beams is carried out. Among our main contributions are the theory of weak scattering of stochastic fields from collections of particles, theory of electromagnetic scattering, combination of theories of propagation in turbulence and weak particle scattering, propagation of stochastic fields in non-classic turbulence and the influence of the power-spectrum slope on the beams, and the active LIDARs using stochastic beams. These results have been published in 51 peer-reviewed papers and presented at 30 conferences and invited talks given by the PI, her collaborators and students. Main collaborations included A. Mahalov

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Section: Systems Operating In Turbulent Atmospherementioning

confidence: 99%

“…3 we show a generic evolution of the intensity distribution and polarization ellipse as a beam goes through the LIDAR system. In [34] we have developed sensing techniques which utilize the degree of coherence and the orientation of the polarization ellipse of the beam.…”

Section: Systems Operating In Turbulent Atmospherementioning

confidence: 99%

Propagation of Stochastic Electromagentic Fields in Atmospheric Turbulence

Korotkova¹

2011

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“…Their widespread appeal stems from the fact that, by simply manipulating spatial coherence, the source's resulting shape and polarization can be precisely controlled. Numerous researchers have designed vector partially coherent sources for applications such as free-space and underwater optical communications [7][8][9][10][11][12][13][14][15][16], remote sensing [17,18], optical scattering [19][20][21][22][23][24][25][26][27][28][29], and particle manipulation and trapping [30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Generation of Vector Partially Coherent Optical Sources Using Phase-Only Spatial Light Modulators

et al. 2016

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A simple and flexible optical system for generating electromagnetic or vector partially coherent sources or beams is presented. The alternative design controls field amplitude (beam shape), coherence, and polarization using only spatial light modulators. This improvement makes the apparatus simpler to construct and significantly increases the flexibility of vector partially coherent source generators by allowing many different types of sources to be produced without changing the physical setup. The system's layout and theoretical foundations are thoroughly discussed. The utility and flexibility of the proposed system are demonstrated by producing a vector Schell-model and non-Schell-model source. The experimental results are compared to theoretical predictions to validate the design. Lastly, design aspects, which must be considered when building a vector partially coherent source generator for a specific application, are discussed.

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“…The behavior of partially-coherent light has been the subject of extensive research especially in the last 10 years. Numerous theoretical and some experimental studies have been performed examining how partially-coherent light propagates through free space and random media (atmospheric turbulence, biological tissue, and ocean water) [1][2][3][4][5] and scatters from deterministic and random objects [6][7][8][9][10]. These studies, as well as many others, have noted interesting characteristics of partially-coherent light that can possibly be exploited in applications such as free-space optical communications, directed energy, remote sensing, particle manipulation, and etcetera.…”

Section: Introductionmentioning

confidence: 99%

Phase-only implementation of the complex screen technique for generating schell-model sources

Hyde

2016

2016 IEEE Aerospace Conference

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In this paper, implementation of the complex screen approach for generating partially-coherent Schell-model sources using phase-only control, like that available using commercial-off-the-shelf liquid-crystal spatial light modulators, is presented. Previous techniques for generating Schell-model sources have used phase-only spatial light modulators in combination with amplitude filters to produce partially-coherent fields. Using amplitude filters complicates the optical set-up and significantly reduces the flexibility of the system. Here, both analytically and with simulations, it is shown that both the amplitude and phase of the source field can be manipulated using phase-only control. This contribution removes the need to use amplitude filters, thereby simplifying the optical set-up and increasing the system's flexibility.

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Sensing of semi-rough targets embedded in atmospheric turbulence by means of stochastic electromagnetic beams

Cited by 30 publications

References 15 publications

Propagation of Stochastic Electromagentic Fields in Atmospheric Turbulence

Propagation of Stochastic Electromagentic Fields in Atmospheric Turbulence

Generation of Vector Partially Coherent Optical Sources Using Phase-Only Spatial Light Modulators

Phase-only implementation of the complex screen technique for generating schell-model sources

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