Optical coherence gratings and lattices

Ma, Li-Yuan; Ponomarenko, Sergey A.

doi:10.1364/ol.39.006656

Cited by 126 publications

(34 citation statements)

References 23 publications

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“…According to the complex Gaussian representation17, the CSD of any partially coherent beam at the source can be expanded into a complete set of pseudo-modes as18,…”

Section: Resultsmentioning

confidence: 99%

Self-steering partially coherent beams

Chen

Ponomarenko

Cai

2017

Sci Rep

Self Cite

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We introduce a class of shape-invariant partially coherent beams with a moving guiding center which we term self-steering partially coherent beams. The guiding center of each such beam evolves along a straight line trajectory which can be engineered to make any angle with the x-axis. We show that the straight line trajectory of the guiding center is the only option in free space due to the linear momentum conservation. We experimentally generate a particular subclass of new beams, self-steering Gaussian Schell beams and argue that they can find applications for mobile target tracing and trapped micro- and/or nanoparticle transport.

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“…According to the complex Gaussian representation17, the CSD of any partially coherent beam at the source can be expanded into a complete set of pseudo-modes as18,…”

Section: Resultsmentioning

confidence: 99%

Self-steering partially coherent beams

Chen

Ponomarenko

Cai

2017

Sci Rep

Self Cite

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“…Recently, Gori and co-workers proposed a sufficient condition for mathematically devising a genuine CSD function [15,16]. Since then, researchers have turned their attention to study PCBs with special DOCs (non-Gaussian function) [17][18][19][20][21]. Owing to their special DOCs, these beams exhibit peculiar propagation features even in free space.…”

Section: Introductionmentioning

confidence: 99%

Numerical Approach for Studying the Evolution of the Degrees of Coherence of Partially Coherent Beams Propagation through an ABCD Optical System

Kacerovská

Khosravi

et al. 2019

Applied Sciences

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In this paper, we propose a numerical approach to simulate the degree of coherence (DOC) of a partially coherent beam (PCB) with a Schell-model correlator in any transverse plane during propagation. The approach is applicable for PCBs whose initial intensity distribution and DOC distribution are non-Gaussian functions, even for beams for which it is impossible to obtain an analytical expression for the cross-spectral density (CSD) function. Based on our approach, numerical examples for the distribution of the DOC of two types of PCBs are presented. One type is the partially coherent Hermite–Gaussian beam. The simulation results of the DOC agree well with those calculated from the analytical formula. The other type of PCB is the one for which it is impossible to obtain an analytical expression of CSD. The evolution of the DOC with the propagation distance and in the far field is studied in detail. Our numerical approach may find potential applications in optical encryption and information transfer.

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“…Recently, modulation of the correlation functions of partially coherent beams has been studied widely [1][2][3][4][5][6][7][8][9] . Correlation function provides a new freedom for manipulating optical field, e.g., creation of light beam with prescribed far-field intensity distribution.…”

Section: Introductionmentioning

confidence: 99%

Correlation-induced self-focusing and self-shaping effect of a partially coherent beam

Chen

Cai

2016

High Pow Laser Sci Eng

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A new specially correlated partially coherent beam named nonuniform multi-Gaussian correlated (NMGC) partially coherent beam is introduced. The correlation functions of such beam in x and y directions are different from each other, i.e., nonuniform correlation function in one direction and multi-Gaussian correlated Schell-model function in the other direction. The propagation properties of an NMGC partially coherent beam in free pace are demonstrated, and we find that the intensity distribution of such beam exhibits self-focusing and self-shifting effect in one direction and self-shaping effect in the other direction on propagation. The correlation-induced self-focusing and self-shaping effect will be useful in some applications, where the high power and shaped laser is required, such as material thermal processing and laser carving.

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Optical coherence gratings and lattices

Cited by 126 publications

References 23 publications

Self-steering partially coherent beams

Self-steering partially coherent beams

Numerical Approach for Studying the Evolution of the Degrees of Coherence of Partially Coherent Beams Propagation through an ABCD Optical System

Correlation-induced self-focusing and self-shaping effect of a partially coherent beam

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