Raman and CT scan mapping of chalcogenide glass diffusion generated gradient index profiles
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2018-05-30 |
| Authors | George P. Lindberg, Josh Cruz, Blair Unger, John Deegan, Robert F. Benson |
| Institutions | United States Naval Research Laboratory, Rochester Precision Optics (United States) |
| Citations | 5 |
Abstract
Section titled āAbstractāGradient index (GRIN) lenses have been created for imaging in the infrared regime by diffusion of chalcogenide glasses. The GRIN lenses are shaped using a combination of precision glass molding and single point diamond turning. The precision glass molding step, is known to cause a drop in the index of refraction in both oxide and chalcogenide glasses. This drop is a direct result of the cooling rate during the molding process. Since the GRIN lenses have an index of refraction profile created by diffusion of multiple chalcogenide glasses, we would expect that the index drop would vary as a function of position. In this paper we investigate the expected profile change due to the index drop of the constituent chalcogenide glasses, as well as report performance data on the GRIN lenses.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2015 - Methods of both destructive and non-destructive metrology of GRIN optical elements
- 2016 - Raman and CT scan mapping of chalcogenide glass diffusion generated gradient index profiles
- 2017 - IR GRIN optics: design and fabrication
- 2015 - Index change of chalcogenide materials from precision glass molding processes
- 2015 - Design and fabrication of multispectral optics using expanded glass map