Journal ArticleDOI
Tapered gradient-index media and zone plates
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In this paper, light propagation through a tapered gradient-index medium with a zone plate located at the input of the medium for non-uniform and uniform illumination is studied.Abstract:
Light propagation through a tapered gradient-index medium with a zone plate located at the input of the medium for non-uniform and uniform illumination is studied. Evolution of the beam half-width of the zone plate diffraction orders and an analogy with the conventional lens imaging formula are presented. A particular case is analysed.read more
Citations
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Journal ArticleDOI
Inhomogeneous optical waveguides
TL;DR: Inhomogeneous Optical Waveguides as discussed by the authors, M. S. Sodha and A. K. Ghatak, 1977. Pp. 269.x + 269.40.
Journal ArticleDOI
Focusing of light by zone plates in Selfoc gradient-index lenses.
TL;DR: The diffraction fields in a hybrid diffractive-gradient-index element composed of an amplitude zone plate and a quarter-pitch Selfoc gradient-index lens under uniform illumination are studied.
Journal ArticleDOI
Tapered gradient-index media and zone plates: Influence of off-axis illumination and finite dimension on light propagation
TL;DR: In this article, the effects of off-axis illumination and finite dimension on the irradiance distribution in a hybrid system formed by a zone plate and a tapered gradient-index (GRIN) medium are investigated.
Journal ArticleDOI
Fresnel zones in tapered gradient-index media.
TL;DR: In this paper, the free propagation of a wave front in an inhomogeneous medium with parabolic refractive index profile and the division of the wave front into Fresnel zones are studied.
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Zone-plate diffraction patterns in gradient-index media.
TL;DR: Diffraction patterns inside gradient-index media in which a complex zone plate is placed at a Fourier transform plane are studied by making use of the optical propagator.
References
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Inhomogeneous optical waveguides
Mahendra Singh Sodha,Ajoy Ghatak +1 more
TL;DR: In this article, the authors present a method for the fabrication of planar waveguides with continuous dielectric constant variation. But they do not consider the propagation of the waveguide through thin films.
Journal ArticleDOI
Inhomogeneous optical waveguides
TL;DR: Inhomogeneous Optical Waveguides as discussed by the authors, M. S. Sodha and A. K. Ghatak, 1977. Pp. 269.x + 269.40.