0000000000894017

AUTHOR

Eduardo Tepichin

showing 2 related works from this author

Lau rings: In-register incoherent superposition of radial self-images

1989

Abstract We describe an optical method for obtaining in-register, incoherent superposition of self-images, with radial symmetry. That is, the Lau effect is implemented, either at infinity or at finite distances, in the form of bright and dark rings of high visibility. This is applied for visualizing radially phase structures, with good-signal-to-noise ratio.

Physicsbusiness.industrymedia_common.quotation_subjectVisibility (geometry)Phase (waves)Symmetry in biologyInfinityAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsSuperposition principleOpticsRegister (music)Quantum mechanicsElectrical and Electronic EngineeringPhysical and Theoretical Chemistrybusinessmedia_commonOptics Communications
researchProduct

Single-zone-plate achromatic fresnel-transform setup: Pattern tunability

1997

Abstract White-light point-source illumination results in the chromatic blurring of the optical field diffracted by an aperture. In this paper, broadband dispersion compensation for a continuous set of Fresnel diffraction patterns associated with an arbitrary input transparency is carried out, in a sequential way, by means of a single on-axis blazed zone plate. The input is illuminated with a white-light converging spherical wavefront and the diffractive lens is inserted at the virtual source plane. We recognize that the position of the input along the optical axis permits to achieve a different achromatic Fresnel diffraction pattern with low residual chromatic aberrations. The theory deriv…

DiffractionPhysicsWavefrontbusiness.industryAstrophysics::Instrumentation and Methods for AstrophysicsPhysics::OpticsZone plateAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materialslaw.inventionOptical axisOpticslawAchromatic lensChromatic aberrationFresnel numberElectrical and Electronic EngineeringPhysical and Theoretical ChemistrybusinessFresnel diffraction
researchProduct