Generation and Propagation of a Hermite-Gaussian Correlated Schell-Model LG0l Beam

Xu, Peng; Lu, Xingyuan; Liu, Xianlong; Zhao, Chengliang; Lin, Rong; Liu, Lin; Cai, Yangjian

doi:10.3390/app9030610

Cited by 13 publications

(3 citation statements)

References 46 publications

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“…For vector PCVBs, the resulting intensity distribution depends on the coherence length δ and is determined by the form of the NCCF, when δ is relatively small, and by the vortex phase, when δ is large [138]. The absolute value of the degree of coherence is determined by the NCCF form and, especially, by its vortex component (Eq.…”

Section: Correlation Optics and Optical Singularitiesmentioning

confidence: 99%

Correlation Optics, Coherence and Optical Singularities: Basic Concepts and Practical Applications

et al. 2022

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The main idea of this review is to trace the interrelations and inter-transitions between the basic concepts and approaches of the correlation optics (including the light coherence) and the singular optics dealing with networks of “exceptional” points of light fields. The principles and examples are described of formation of light fields with required structures (amplitude, phase and polarization distributions, spectral properties as well as the internal energy flows and energy gradients responsible for optical forces) via superpositions of model optical fields of simple standard configurations and under controllable correlation conditions. The theoretical and experimental results, obtained by the authors and other researchers, demonstrate possibilities of the general approach to the complex fields formation with spatial and polarization inhomogeneities. A special topic, considered in more detail, is the interaction of structured optical fields with the media containing suspended micro- and nanoparticles, their inhomogeneous heating by the laser radiation and the accompanying self-diffraction and self-focusing phenomena. Possible light-induced phase transitions and controllable generation of the gas-vapor microbubbles in the medium are discussed. Specific optical singularities in polychromatic light fields are analyzed in connection to the field coherence. Some experimental solutions for revealing the fine structure of optical fields by means of the interference schemes are presented. Practical applications for the micromanipulation techniques, optical diagnostics of remote and random objects, optical treatment and laboratory practice in biology and medicine are described and discussed.

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Section: Correlation Optics and Optical Singularitiesmentioning

confidence: 99%

Correlation Optics, Coherence and Optical Singularities: Basic Concepts and Practical Applications

et al. 2022

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“…In these beams, the spatial coherence structure is determined by the spatial separation between two positions. Significant synthesized Schell model sources are Laguerre-Gaussian correlated [13,14], Bessel-Gaussian correlated [15], Hermite-Gaussian correlated [16], and multi-Gaussian correlated [17]. Other than these correlation functions, some other synthesis methods include non-uniform correlated sources [18,19], correlation holography [20,21], and other different exotic structures [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Effect of Polarization on Cross-Spectral Density Matrix

Gautam,

Naik,

Narayanamurthy

et al. 2024

Photonics

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Coherence-polarization properties of different beams are experimentally measured in the far-field from the source and results are presented for incoherent sources with three different polarization features, such as unpolarized, diagonally polarized, and spatially depolarized. These results highlight the role of polarization tailoring on far-field coherence-polarization properties of the incoherent vector source. The effect of polarization on far-field coherence is analyzed using a beam cross-spectral density (CSD) matrix, and the role of polarization tailoring on the CSD matrix is demonstrated. Two-dimensional spatial distributions of all four elements of the CSD matrix are experimentally realized using a field-based interferometer with Sagnac geometry in combination with a four-step phase-shifting technique.

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“…With the rapid development of partially coherent light and its wide applications [17], nonconventional partially coherent light, the correlation function of which does not satisfy a Gaussian distribution, has been proposed [18,19]. It has been confirmed both theoretically and experimentally that the correlation function provides a new effective way to shape the intensity profile [20][21][22][23][24][25][26][27][28][29][30]. What is the effect of the nonconventional correlation function on the intensity distribution of beams focused by an axicon lens?…”

Section: Introductionmentioning

confidence: 99%

Partially Coherent Flat-Topped Beam Generated by an Axicon

et al. 2019

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The intensity distribution of a partially coherent beam with a nonconventional correlation function, named the multi-Gaussian Schell-model (MGSM) beam, focused by an axicon was investigated in detail. Our numerical results showed that an optical needle with a flat-topped spatial profile and long focal depth was formed and that we can modulate the focal shift and focal depth of the optical needle by varying the width of the degree of coherence (DOC) and the parameters of the correlation function. The adjustable optical needle can be applied for electron acceleration, particle trapping, fiber coupling and percussion drilling.

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Generation and Propagation of a Hermite-Gaussian Correlated Schell-Model LG0l Beam

Cited by 13 publications

References 46 publications

Correlation Optics, Coherence and Optical Singularities: Basic Concepts and Practical Applications

Correlation Optics, Coherence and Optical Singularities: Basic Concepts and Practical Applications

Effect of Polarization on Cross-Spectral Density Matrix

Partially Coherent Flat-Topped Beam Generated by an Axicon

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