Partially coherent vortex beams with a separable phase

Bogatyryova, G. V.; Felde, Christina V.; Polyanskii, Peter V.; Ponomarenko, Sergey A.; Soskin, M. S.; Wolf, Emil

doi:10.1364/ol.28.000878

Cited by 160 publications

(78 citation statements)

References 6 publications

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“…Up to now, many methods based on the measurement of the intensity distribution, diffraction, or interference pattern of a vortex beam were proposed to measure the OAM or l [7][8][9][10] . Partially coherent vortex beams were introduced by Gori, Ponomarenko, and collaborators [11][12][13] . Partially coherent LG 0l beams and LG pl beams are typical kinds of partially coherent vortex beams.…”

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confidence: 99%

Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Liu

et al. 2017

Chin. Opt. Lett.

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It is known that one can determine the mode orders (i.e., the azimuthal order and radial order) of a partially coherent LG pl beam (i.e., a partially coherent vortex beam) based on the measurement of the cross-correlation function (CCF) and the double correlation function (DCF) together. The technique for measuring the CCF is known. In this Letter, we propose a method for measuring the DCF. Based on the proposed method, the determination of the mode orders of a partially coherent LG pl beam is demonstrated experimentally.

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confidence: 99%

Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Liu

et al. 2017

Chin. Opt. Lett.

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“…a singular optics approach of nonuniformly polarized, partially spatially coherent and polychromatic fields have revealed phase singularities intrinsic to arbitrary complex parameter of an optical field. It is important that such singularities can occur, when the common phase singularities of the field's complex amplitude are absent both in the complex beam as a whole and in some of its components [15][16][17][18][19][20]. This important extension of the subject of singular optics is in good agreement with Wolf's methodology in optics for observable quantities [21].…”

Section: Introductionmentioning

confidence: 77%

Singular-optical coloring of regularly scattered white light

Angelsky¹,

Polyanskii²,

Hanson³

2006

Opt. Express

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When the surface roughness is comparable with the wavelength of the probing radiation, the scattered field contains both the regular (forward-scattered) component of coherent nature and the diffusely scattered part. Coloring of the regular component of white light scattered by a colorless dielectric slab with a rough surface is considered as a peculiar effect of singular optics with zero (infinitely extended) interference fringes. To explain the observed alternation of colors with respect to the increasing depth of the surface roughness, we apply a model of transition layers associated with the surface roughness. By applying the chromascopic technique, it is shown that the modifications of the normalized spectrum of the forwardscattered white light can be interpreted as the effect of a quarter-wavelength (anti-reflecting) layer for some spectral component of a polychromatic probing beam.

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“…Many advances have been made in the field of partially coherent vortex beams (Agarwal 1999;Bogatyryova et al 2003;Ponomarenko 2001;Palacios et al 2004;Elias 2008). One of its main consequences for natural sources with OAM is the possibility of having photons with non-zero OAM inside a beam with zero total OAM.…”

Section: Challenges Of Measuring Astronomical Oammentioning

confidence: 99%

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

Uribe-Patarroyo

Alvarez-Herrero

Ariste³

et al. 2010

A&A

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Context. The orbital angular momentum (OAM) of the photon is a property of light from astronomical objects that has not yet been measured. We propose a method of measuring the OAM spectrum of light from an extended natural source, the Sun. Relating the OAM spectrum of different solar areas to its structures could lead to a novel remote sensing technique. Aims. We present a method for measuring the OAM spectrum of solar photons. Methods. The THEMIS telescope is being used with a novel phase-diversity technique. A spatial light modulator is placed on one pupil image, and an ad-hoc optical setup allows the measurement of two simultaneous phase-diverse images in the same CCD, with equal optical paths. Results. Preliminary results show that very good seeing is mandatory for this kind of observation. The method works in the laboratory, and good seeing conditions in the 2010 campaign are being awaited.

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Partially coherent vortex beams with a separable phase

Cited by 160 publications

References 6 publications

Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Experimental determination of the azimuthal and radial mode orders of a partially coherent LGpl beam (Invited Paper)

Singular-optical coloring of regularly scattered white light

Detecting photons with orbital angular momentum in extended astronomical objects: application to solar observations

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