Open AccessOptical reflectionless potentials for broadband, omnidirectional antireflection
Author(s) -
Litty V. Thekkekara,
Venu Gopal Achanta,
Subhasish Dutta Gupta
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.017382
Subject(s) - optics , broadband , omnidirectional antenna , reflection (computer programming) , context (archaeology) , scattering , wavelength , realization (probability) , angle of incidence (optics) , materials science , transmission (telecommunications) , refractive index , reflection coefficient , optoelectronics , fresnel equations , physics , telecommunications , antenna (radio) , computer science , paleontology , statistics , mathematics , biology , programming language
Reflectionless potentials (RPs) represent a class of potentials that offer total transmission in the context of one dimensional scattering. An optical realization of RP can exhibit a truly broadband omni-directional antireflection. We report our experimental observations confirming the reflectionless behavior. Stratified media conforming to RP's are designed and fabricated using Al(2)O(3) and TiO(2) heterolayers. They showed < 0.5% reflection over the broad wavelength range of 350 nm to 2500 nm for angles of incidence 0 - 50 degrees. These RPs can be designed on substrates and are thus interesting for optical instrumentation as broadband, omni-directional antireflection coatings.