Work

Continuous laser printing of surface relief gratings on azopolymer films

Year: 2024

Type: article

Abstract: A maskless single beam process for photofabrication of surface microstructures is reported. A continuously moving azopolymer film is illuminated with structured polarized light from a 488 nm laser and spatial light modulator, driving the formation of surface relief gratings in real time. The structures were replicated using nanoimprint lithography, and exhibited a maximum diffraction efficiency of order 30% at 633 nm. Using the period tunability of the spatial light modulator, surface gratings were fabricated that diffract red, green, and blue light along a common direction, illustrating the potential of this fabrication platform in the field of structured color.

Source: Optics Express

DOI: 10.1364/oe.542004

Authors: Oktay Senel, Cody Pedersen, Benjamin Gruppuso, Zay Farzan, Jonas Strobelt, David J. McGee

Institution: University of Potsdam

Language: English

Topic: Laser Material Processing Techniques

Subfield: Computational Mechanics

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Science Foundation