dorsal/arxiv
View SchemaMicroscopic Origin of Spatial Cherence and Wolf Shifts
| Authors | Girish S. Agarwal |
|---|---|
| Categories | |
| ArXiv ID | physics/0310004 |
| URL | https://arxiv.org/abs/physics/0310004 |
Abstract
Wolf discovered how the spatial coherence characteristics of the source affect the spectrum of the radiation in the far zone. In particular the spatial coherence of the source can result either in red or blue shifts in the measured spectrum.His predictions have been verified in a large number of different classes of systems. Wolf and coworkers usually assume a given form of source correlations and study its consequence. In this paper we consider microscopic origin of spatial coherence and radiation from a system of atoms. We discuss how the radiation is different from that produced from an independent system of atoms. We show that the process of radiation itself is responsible for the creation of spatial correlations within the source. We present different features of the spectrum and other statistical properties of the radiation, which show strong dependence on the spatial correlations. We show the existence of a new type of two-photon resonance that arises as a result of such spatial correlations. We further show how the spatial coherence of the field can be used in the context of radiation generated by nonlinear optical processes. We conclude by demonstrating the universality of Wolf shifts and its application in the context of pulse propagation in a dispersive medium.
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"abstract": "Wolf discovered how the spatial coherence characteristics of the source\naffect the spectrum of the radiation in the far zone. In particular the spatial\ncoherence of the source can result either in red or blue shifts in the measured\nspectrum.His predictions have been verified in a large number of different\nclasses of systems. Wolf and coworkers usually assume a given form of source\ncorrelations and study its consequence. In this paper we consider microscopic\norigin of spatial coherence and radiation from a system of atoms. We discuss\nhow the radiation is different from that produced from an independent system of\natoms. We show that the process of radiation itself is responsible for the\ncreation of spatial correlations within the source. We present different\nfeatures of the spectrum and other statistical properties of the radiation,\nwhich show strong dependence on the spatial correlations. We show the existence\nof a new type of two-photon resonance that arises as a result of such spatial\ncorrelations. We further show how the spatial coherence of the field can be\nused in the context of radiation generated by nonlinear optical processes. We\nconclude by demonstrating the universality of Wolf shifts and its application\nin the context of pulse propagation in a dispersive medium.",
"arxiv_id": "physics/0310004",
"authors": [
"Girish S. Agarwal"
],
"categories": [
"physics.optics"
],
"title": "Microscopic Origin of Spatial Cherence and Wolf Shifts",
"url": "https://arxiv.org/abs/physics/0310004"
},
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