6533b82dfe1ef96bd129144c

RESEARCH PRODUCT

High-contrast white-light Lau fringes

Jesús LancisPedro AndrésEnrique TajahuerceVicent ClimentZbigniew JaroszewiczGladys Mínguez-vega

subject

DiffractionPhysicsbusiness.industrymedia_common.quotation_subjectVisibility (geometry)Astrophysics::Instrumentation and Methods for AstrophysicsPhysics::OpticsPhysical opticsAtomic and Molecular Physics and Opticslaw.inventionOpticsAchromatic lenslawContrast (vision)Physics::Atomic PhysicsMonochromatic colorbusinessDiffraction gratingFresnel diffractionmedia_common

description

We present a new optical assembly with which to achieve Lau fringes with totally incoherent illumination. Gratinglike codification of the spatially incoherent source combined with an achromatic Fresnel diffraction setup allows us to achieve Lau fringe-pattern visibility of almost 100% with broadband light. The white-light character to our proposed setup is in stark contrast to previous monochromatic implementations. Potential implications of this fact are identified.

https://doi.org/10.1364/ol.29.000150