Work

Distinctive molecular configuration of nanostructured silica deposited at a glancing angle

Year: 2025

Type: article

Abstract: Glancing-angle deposition (GLAD) produces nanostructured silica, showcasing form birefringence, an attractive alternative to traditionally used crystalline materials for polarization control. This work aims to enhance the understanding of its internal structure and associated defects in its native form and after laser processing. Our observations show, for the first time, that the GLAD silica exhibits a unique Raman signature that converges to a typical silica spectrum following laser melting. Defects were also investigated with fluorescence spectroscopy. The new insight provided by this work informs our understanding of this birefringent material and drives optimization of its performance in GLAD-based polarization control devices.

Source: Optics Express

DOI: 10.1364/oe.551290

Authors: Marcela Mireles, Brittany N. Hoffman, Sara MacNally, Christopher C. Smith, Amy L. Rigatti, Stavros G. Demos

Language: English

Topic: Optical Coatings and Gratings

Subfield: Surfaces, Coatings and Films

Field: Materials Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Nuclear Security Administration

Award: G1116528938