Generation of Perfect Optical Vortices by Using a Transmission Liquid Crystal Spatial Light Modulator

Carvajal, Nelson Anaya; Acevedo, Cristian Hernando; Moreno, Yezid Torres

doi:10.1155/2017/6852019

Cited by 20 publications

(12 citation statements)

References 41 publications

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“…To overcome this, another class of vortices has been introduced, known as perfect optical vortices (POVs) with order-independent intensity distribution [94]. The POV beams are known for very thin annular rings whose width and radius are independent of topological charge [95][96][97][98]. The POV beams can be generated experimentally by Fourier transforming Bessel-Gauss beams which will be generated by passing optical vortex beams through an axicon [99][100][101].…”

Section: Correlations In Scattered Perfect Optical Vorticesmentioning

confidence: 99%

Correlations in Scattered Phase Singular Beams

Vanitha¹,

Salla²,

Singh³

2023

Holography - Recent Advances and Applications

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We discuss about the correlations present in the scattered phase singular beams and utilize them for obtaining the corresponding mode information. We experimentally generate the coherence vortices using the cross-correlation functions between the speckle patterns and validate them with the exact analytical expressions. We also explore their propagation characteristics by considering their geometry along with their divergence. We utilize the autocorrelation measurements of speckle patterns for obtaining the mode information. Further, we study the correlations present in scattered perfect optical vortices which lead to a new class of coherence functions, Bessel-Gauss coherence functions, and utilized for generating the non-diffracting random fields, i.e. propagation invariant fields. We utilized these correlation functions, which are order-dependent although the speckle patterns are order-independent, for encrypting the information which has higher advantage than normal random optical fields.

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Section: Correlations In Scattered Perfect Optical Vorticesmentioning

confidence: 99%

Correlations in Scattered Phase Singular Beams

Vanitha¹,

Salla²,

Singh³

2023

Holography - Recent Advances and Applications

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“…Generally speaking, a single phase-only SLM can control both the amplitude and phase of incident beams. Phase modulation was achieved by loading different phase holograms, such as high-order LG beams [49], multiring LG beams [50,51], perfect Bessel beams [52], and anomalous vortex beams [53]. Amplitude modulation can be achieved according to the diffraction theory.…”

Section: Digital Laser Based On Slm and Dmd Modulatormentioning

confidence: 99%

Structured Light Laser Based on Intra-Cavity Modulation

Guo

Wang

2022

Photonics

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Structured light fields carrying orbital angular momentum (OAM) have been widely studied, and a variety of applications have been found. The exploration of the generation of the structured light beams with higher purity, order, and efficiency has become an inevitable trend. In early years, structured light beams are normally generated with the extra-cavity methods, as it is simpler in principle. However, the intra-cavity generation of the structured light has a better beam purity and higher light conversion efficiency. Here, the current advance in the production of structured light directly from lasers based on spatial light modulators (SLMs), metasurfaces, and microrings is reviewed.

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“…Considering a more profound perspective for further increasing the information capacity, similar to spatial-mode multiplexing [22], one can nest multiple POVs with independent OAM to form a spatial multimode POV (MPOV) [23], with broad application prospects in high-capacity information processing. To date, research devoted to POVs and MPOVs mainly focuses on generation [24][25][26][27], property analysis [28][29][30][31], optical manipulation [32][33][34] and optical communication [35][36][37][38][39]. A few studies also explore quantum applications and the nonlinear effects based on POVs [40,41].…”

Section: Introductionmentioning

confidence: 99%

Phase gradient protection of stored spatially multimode perfect optical vortex beams in a diffused rubidium vapor

Chen,

Wang,

Wang

et al. 2021

Preprint

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We experimentally investigate the optical storage of perfect optical vortex (POV) and spatially multimode perfect optical vortex (MPOV) beams via electromagnetically induced transparency (EIT) in a hot vapor cell. In particular, we study the role that phase gradients and phase singularities play in reducing the blurring of the retrieved images due to atomic diffusion. Three kinds of manifestations are enumerated to demonstrate such effect. Firstly, the suppression of the ring width broadening is more prominent for POVs with larger orbital angular momentum (OAM). Secondly, the retrieved double-ring MPOV beams' profiles present regular dark singularity distributions that are related to their vortex charge difference. Thirdly, the storage fidelities of the triple-ring MPOVs are substantially improved by designing line phase singularities between multi-ring MPOVs with the same OAM number but offset phases between adjacent rings. Our experimental demonstration of MPOV storage opens new opportunities for increasing data capacity in quantum memories by spatial multiplexing, as well as the generation and manipulation of complex optical vortex arrays.

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Generation of Perfect Optical Vortices by Using a Transmission Liquid Crystal Spatial Light Modulator

Cited by 20 publications

References 41 publications

Correlations in Scattered Phase Singular Beams

Correlations in Scattered Phase Singular Beams

Structured Light Laser Based on Intra-Cavity Modulation

Phase gradient protection of stored spatially multimode perfect optical vortex beams in a diffused rubidium vapor

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