Higher-order Stokes-parameter correlation to restore the twisted wave front propagating through a scattering medium

Sarkar, Tushar; Parvin, Reajmina; Brundavanam, Maruthi M.; Singh, Rakesh Kumar

doi:10.1103/physreva.104.013525

Cited by 21 publications

(23 citation statements)

References 40 publications

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“…An anticlockwise direction of rotation of phase variation corresponds to the positive and a clockwise direction of rotation corresponds to the negative topological charge. Furthermore, to highlight the applicability of the approach in more applied scenarios, a quantitative analysis of the recovered OAM modes is carried out using orthogonal projection method [19,39]. The OAM power spectrum of recovered modes is determined, and a decomposition is carried out for each OAM component in terms of azimuthal modes.…”

Section: Resultsmentioning

confidence: 99%

“…However, the presence of inhomogeneous or turbulent atmosphere inevitably destroys the helical wavefront of the vortex beam, which limits the execution of conventional detection schemes. Last decade saw the introduction of several research efforts that emphasize the development of sophisticated approaches for the recovery and determination of topological charge of vortex beams propagating through rough scattering surface by exploiting the information bearing properties of the speckle pattern generated from the scattering medium [15][16][17][18][19]. In addition, several theoretical investigations on the cross-correlation function of partially coherent optical beams with vortices were demonstrated and techniques were developed for helicity and topological charge determination of partially coherent vortex beams [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

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Recovery and Characterization of Orbital Angular Momentum Modes with Ghost Diffraction Holography

et al. 2021

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Orbital angular momentum (OAM) of optical vortex beams has been regarded as an independent physical dimension of light with predominant information-carrying potential. However, the presence of scattering environment and turbulent atmosphere scrambles the helical wavefront and destroys the orthogonality of modes in vortex beam propagation. Here, we propose and experimentally demonstrate a new basis for the recovery of the OAM mode using a holographic ghost diffraction scheme. The technique utilizes the speckle field generated from a rotating diffuser for optical vortex mode encoding, and the fourth-order correlation of the speckle field for the efficient recovery of the associated modes. Furthermore, we successfully demonstrate the complex-field recovery of OAM modes by the adoption of a holography scheme in combination with the ghost diffraction system. We evaluate the feasibility of the approach by simulation and followed by experimental demonstration for the recovery of various sequentially encoded OAM modes. Finally, the efficacy of the recovered modes was quantitatively analyzed by an OAM mode analysis utilizing orthogonal projection scheme.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recovery and Characterization of Orbital Angular Momentum Modes with Ghost Diffraction Holography

et al. 2021

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“…Furthermore, the recovered OAM modes were characterized by performing a quantitative analysis by making use of the orthogonal projection method [66][67][68].…”

Section: Characterization Of Oam Modesmentioning

confidence: 99%

Ghost Diffraction Holography: A Correlation Assisted Quantitative Tool for Complex Field Imaging and Characterization

Kumari¹,

Chen²,

Singh³

et al. 2023

Holography - Recent Advances and Applications

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The fascinating domain of ghost imaging has been a subject of interest in the fundamental and applied research for the last two decades with its promising applications in various imaging and characterization scenarios. In this chapter, we discuss the recently developed ghost diffraction holography (GDH) system with due emphasis on the capability of quantitative complex-field imaging in the ghost framework. The development of the unconventional correlation-assisted GDH technique by adopting the holography concept in ghost diffraction scheme is described, and the quantitative phase imaging capability is demonstrated in the microscopy. In addition, the technique exploits the spatial statistics of time-frozen recorded speckle intensity with snapshot detection in ghost framework, which could broaden the applications of the developed microscopy to real-time imaging of two- and three-dimensional biological samples with high resolution. Furthermore, we discuss demonstrated applications of the technique in the imaging various spatially varying complex-valued macroscopic and microscopic samples and the potential application of the technique in the recovery and characterization of orbital angular momentum modes encoded in spatially incoherent speckle field.

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“…In addition, LC-SLM serves key role in the experimental demonstration of advanced digital holographic techniques, viz. coded aperture correlation holography (COACH) [22][23][24], Fresnel incoherent correlation holography (FINCH) [2,24], Stokes correlation holography [21,25,26], polarization holography [18,19,[27][28][29], etc. This chapter presents comprehensive literature (review) on the LC-SLM and its applicability in digital holography.…”

Section: Introductionmentioning

confidence: 99%

Spatial Light Modulators and Their Applications in Polarization Holography

Tiwari¹,

Bisht²

2023

Holography - Recent Advances and Applications

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Liquid crystal spatial light modulators (LC-SLMs) have gained substantial interest of the research fraternity due to their remarkable light modulation characteristics in modern imaging applications. Replacing the conventional optical elements from the SLM-based computer-generated holograms (CGHs) is a trending approach in modern digital holographic applications due to the optimized phase shift depending on the phase modulation features of SLMs. Apparently; SLMs serve a crucial role in the experimental implementation of digital holographic techniques. However, the resolution of the CGHs are sometimes limited by the structural discrepancies (fill factor, spatial anomalies, refresh rate, etc.) of SLM. Therefore, it is recommended to calibrate the modulation characteristics of SLMs prior to their implementation for imaging applications. This chapter provides comprehensive literature (review) of the LC-SLMs along with their major calibration methods. In addition, recent interesting applications of LC-SLMs have been discussed thoroughly within the framework of polarization holography.

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Higher-order Stokes-parameter correlation to restore the twisted wave front propagating through a scattering medium

Cited by 21 publications

References 40 publications

Recovery and Characterization of Orbital Angular Momentum Modes with Ghost Diffraction Holography

Recovery and Characterization of Orbital Angular Momentum Modes with Ghost Diffraction Holography

Ghost Diffraction Holography: A Correlation Assisted Quantitative Tool for Complex Field Imaging and Characterization

Spatial Light Modulators and Their Applications in Polarization Holography

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