The subtraction of mutually displaced Gaussian Schell-model beams

Sande, Juan Carlos González de; Santarsiero, Massimo; Piquero, Gemma; Gori, F.

doi:10.1088/2040-8978/17/12/125613

Cited by 7 publications

(5 citation statements)

References 37 publications

(66 reference statements)

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“…However, they are not orthogonal and for this reason we refer to them as pseudo-modes. By comparing Equations (10)- (14), the pseudo-eigenvalues Λ m,n can be obtained as Λ m,n = n 2 β 2 m,n that are explicitly nonnnegative, which confirms the nonnegativeness of the proposed CSD. The normalization factors can be expressed in terms of the generalized hypergeometric functions…”

Section: Source Modelsupporting

confidence: 54%

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Besinc Pseudo-Schell Model Sources with Circular Coherence

et al. 2019

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Partially coherent sources with non-conventional coherence properties present unusual behaviors during propagation, which have potential application in fields like optical trapping and microscopy. Recently, partially coherent sources exhibiting circular coherence have been introduced and experimentally realized. Among them, the so-called pseudo Schell-model sources present coherence properties that depend only on the difference between the radial coordinates of two points. Here, the intensity and coherence properties of the fields radiated from pseudo Schell-model sources with a degree of coherence of the besinc type are analyzed in detail. A sharpening of the intensity profile is found for the propagated beam by appropriately selecting the coherence parameters. As a possible application, the trapping of different types of dielectric nanoparticles with this kind of beam is described.

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Section: Source Modelsupporting

confidence: 54%

“…Nonetheless, recent advances in different fields require new source models with specific properties to be provided. In this sense, the control of the coherence properties of the source allows to obtain beams with peculiar behaviour of their intensity in propagation [8,[11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Besinc Pseudo-Schell Model Sources with Circular Coherence

et al. 2019

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“…Among them, Gaussian Schell-model (GSM) sources, where both the spectral degree of coherence and the irradiance profile are Gaussianly shaped [1,24], have been extensively studied and characterized [25][26][27][28][29][30][31][32]. Since the publication of the superposition rule [33,34], that have eased the design of physically realizable CSD's, different kind of sources, of the Schell-model type [20,21,35,36] or not [6,[37][38][39][40][41][42][43][44][45] have been proposed.…”

Section: Introductionmentioning

confidence: 99%

Pseudo-Schell model sources

Sande¹,

Martı́nez-Herrero²,

Piquero³

et al. 2019

Opt. Express

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Partially coherent pseudo-Schell model sources are introduced and analyzed. They present radial symmetry and coherence characteristics depending on the difference between the radial distances of two points from the source center. As a consequence, all points belonging to circles centered on the symmetry center of the source are perfectly correlated. We show that such sources radiate fields with peculiar behaviors in paraxial propagation. In particular, when compared to beams produced by Gaussian Schell-model sources with comparable coherence parameters, the irradiance can present sharper profiles and higher peak values and a better beam quality parameter. Furthermore, when a pseudo-Schell model source presents a vortex, the propagated beam preserves a null of the intensity along its axis.

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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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The subtraction of mutually displaced Gaussian Schell-model beams

Cited by 7 publications

References 37 publications

Besinc Pseudo-Schell Model Sources with Circular Coherence

Besinc Pseudo-Schell Model Sources with Circular Coherence

Pseudo-Schell model sources

Partially polarized pseudo-Schell model sources

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