A fast and efficient method for producing partially coherent sources

Hyde, Milo W.; Bose‐Pillai, Santasri R.; Xiao, Xifeng; Voelz, David G.

doi:10.1088/2040-8986/19/2/025601

Cited by 18 publications

(8 citation statements)

References 25 publications

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“…Realizing the potential of this transformation, several authors have proposed using surface plasmons and wavelength-scale structures to precisely control spatial coherence for reasons other than just spectral or directional emission [11][12][13][14][15][16][17]. These plasmonic methods would permit coherence manipulation at the nano-or micrometer scale-coherence control on a microchip-and be superior in terms of size, weight, power, and complexity to the more traditional approaches for coherence control [18][19][20][21][22][23]. Even at longer wavelengths, where true surface plasmons are not excited, researchers have fabricated materials to excite so-called 'spoof plasmons' [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Near-field effects on partially coherent light scattered by an aperture

Hyde

Havrilla

2019

J. Phys. Commun.

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We investigate how the near field affects partially coherent light scattered from an aperture in an opaque screen. Prior work on this subject has focused on the role of surface plasmons, and how they affect spatial coherence is well documented. Here, we consider other near-field effects that might impact spatial coherence. We do this by examining the statistics of the near-zone field scattered from an aperture in a perfect electric conductor plane-a structure that does not support surface plasmons. We derive the near-field statistics (in particular, cross-spectral density functions) by applying electromagnetic equivalence theorems and the Method of Moments. We find, even in the absence of surface plasmons, that near-field physics can affect the coherence of the scattered field. The analysis and findings presented herein complement the existing coherence-related surface plasmons literature, and could find use in the design of photonic devices built to engineer spatial coherence.

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Section: Introductionmentioning

confidence: 99%

Near-field effects on partially coherent light scattered by an aperture

Hyde

Havrilla

2019

J. Phys. Commun.

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“…Recently, a new approach for realizing partially coherent sources was proposed . In that work, it was analytically shown that any uniformly correlated or Schell‐model source could be realized by incoherently summing beams with randomly tilted phase fronts.…”

Section: Introductionmentioning

confidence: 99%

“…In addition to being simple, the technique presented in ref. combines both speed and flexibility, making it a good choice for DE systems which use spatial coherence to reduce scintillation.…”

Section: Introductionmentioning

confidence: 99%

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Physical realization of Schell‐model sources using a fast steering mirror

Hyde

Bose‐Pillai

Xiao

et al. 2017

Micro & Optical Tech Letters

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three times greater than the nonoptimized array at a cost of 0.8 dB gain decrease of the maximum gain.A wideband reflectarray using multiresonant elements adjusted by an optimization routine has been presented and compared. The elements achieved over three cycles of truetime delay, and the phases of elements were optimized to improve the bandwidth in the design frequency range. The measured result shows that 1 dB bandwidth of the optimized array has increased by three times wider than the bandwidth of a nonoptimized array.

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“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14] It is also expected that interesting results could be found if the vectorial nature of light is taken into account. The coherence and polarization characteristics of a light source can be appropriately described by its cross-spectral density matrix (CSDM).…”

Section: Introductionmentioning

confidence: 99%

Partially polarized pseudo-Schell model sources

Martı́nez-Herrero

Maluenda

Piquero

et al. 2017

Third International Conference on Applications of Optics and Photonics

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In this work a new type of partially polarized and partially coherent sources is proposed. The coherence characteristics of these sources are dependent on the difference of the radial distances from the source center of the two points to be compared. The coherence is perfect for points located on the same circle centered on the source center and decreases for points that belongs to different concentric circles. The maximum attainable coherence is related to the degree of polarization of the source. Coherence and polarization characteristics of this kind of fields at the source plane and upon free space propagation are analyzed in detail for a simple case. For the particular presented example, a partially polarized and partially coherent field is obtained, whose polarization properties are invariant in propagation.

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A fast and efficient method for producing partially coherent sources

Cited by 18 publications

References 25 publications

Near-field effects on partially coherent light scattered by an aperture

Near-field effects on partially coherent light scattered by an aperture

Physical realization of Schell‐model sources using a fast steering mirror

Partially polarized pseudo-Schell model sources

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