Abstract

A simple inline holographic setup is used to fabricate holographic diffractive lenses using off-the-shelf components. The resulting surface relief gratings are inscribed directly in azobenzene-functionalized thin films with pitches that agree well with a theoretical Fresnel zone plate. The annular gratings have an outer radius of approximately 9 mm and an inner radius of less than 4 mm. Interfering laser beams, circularly polarized in the same direction, generally produce poor-quality gratings in azo-films, but the addition of a reference beam lens greatly improved their consistency and produced quality gratings with depths up to 400 nm. Multiple exposures produce multifocal diffractive lenses, while angling the sample resulted in focal lines, instead of focal points.

© 2021 Optical Society of America

Inscription and analysis of non-uniform diffraction gratings in azobenzene molecular glass thin films

Nicholas Swanson and Ribal Georges Sabat
Opt. Express 26(7) 7876-7887 (2018)

In-line and off-axis polarization-selective holographic lenses recorded in azopolymer thin films via polarization holography and polarization multiplexing

Lian Nedelchev, Georgi Mateev, Ludmila Nikolova, Dimana Nazarova, Branimir Ivanov, Velichka Strijkova, Elena Stoykova, Kihong Choi, and Joongki Park
Appl. Opt. 62(10) D1-D7 (2023)

Superimposed surface-relief diffraction grating holographic lenses on azo-polymer films

Ribal Georges Sabat
Opt. Express 21(7) 8711-8723 (2013)

Polarization holographic recording of vortex diffractive optical elements on azopolymer thin films and 3D analysis via phase-shifting digital holographic microscopy

Veronica Cazac, Elena Achimova, Vladimir Abashkin, Alexandr Prisacar, Constantin Loshmanschii, Alexei Meshalkin, and Karen Egiazarian
Opt. Express 29(6) 9217-9230 (2021)

Laser-induced controllable chirped-pitch circular surface-relief diffraction gratings on AZO glass

James Leibold and Ribal Georges Sabat
Photon. Res. 3(4) 158-163 (2015)