Babinet-bilayered geometric phase optical elements
Language
en
Article de revue
This item was published in
Optics Letters. 2018, vol. 43, n° 11, p. 2623-2626
Optical Society of America - OSA Publishing
English Abstract
Geometric phase optical elements based on structured anisotropy are widely used for phase shaping via their orienta-tional degree of freedom. To date, amplitude shaping via space-variant retardance is much less investigated, ...Read more >
Geometric phase optical elements based on structured anisotropy are widely used for phase shaping via their orienta-tional degree of freedom. To date, amplitude shaping via space-variant retardance is much less investigated, a practical reason being that the spin-orbit interaction of light couples retardance with the dynamic part of the optical phase. Inspired by the complementary diffractive elements associated with Babinet's principle, a bilayered subwavelength grating design is proposed in order to cancel out the spatial modulation of the dynamic phase usually associated with space-variant birefringent phase retardation. This concept is illustrated in the framework of single-mode Laguerre Gauss –beam shaping.Read less <
English Keywords
Laser beam shaping
Subwave length structures
Origin
Hal imported