Sulfur copolymers for infrared optical imaging

S. Namnabat, J. J. Gabriel, Dong-Chul Pyun, Robert A Norwood, E. L. Dereniak, J. Van Der Laan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The development of organic polymers with low infrared absorption has been investigated as a possible alternative to inorganic metal oxide, semiconductor, or chalcogenide-based materials for a variety of optical devices and components, such as lenses, goggles, thermal imaging cameras and optical fibers. In principle, organic-based polymers are attractive for these applications because of their low weight, ease of processing, mechanical toughness, and facile chemical variation using commercially available precursors. Herein we report on the optical characterization of a new class of sulfur copolymers that are readily moldable, transparent above 500 nm, possess high refractive index (n > 1.8) and take advantage of the low infrared absorption of S-S bonds for potential use in the mid-infrared at 3-5 microns. These materials are largely made from elemental sulfur by an inverse vulcanization process; in the current study we focus on the properties of a chemically stable, branched copolymer of poly(sulfur-random-1,3-diisopropenylbenzene) (poly(S-r- DIB). Copolymers with elemental sulfur content ranging from 50% to 80% by weight were studied by UV-VIS spectroscopy, FTIR, and prism coupling for refractive index measurement. Clear correlation between material composition and the optical properties was established, confirming that the high polarizability of the sulfur atom leads to high refractive index while also maintaining low optical loss in the infrared.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume9070
ISBN (Print)9781628410075
DOIs
StatePublished - 2014
Event40th Conference on Infrared Technology and Applications - Baltimore, MD, United States
Duration: May 5 2014May 8 2014

Other

Other40th Conference on Infrared Technology and Applications
CountryUnited States
CityBaltimore, MD
Period5/5/145/8/14

Fingerprint

Optical Imaging
Infrared Imaging
Copolymer
Sulfur
Refractive Index
copolymers
Infrared
sulfur
Copolymers
Infrared radiation
Imaging techniques
Absorption
Polymers
Refractive index
Infrared absorption
Thermal Imaging
refractivity
Toughness
Optical Devices
Mid-infrared

Keywords

  • High refractive index polymers
  • Infrared materials
  • Infrared photonics
  • Optical materials

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Namnabat, S., Gabriel, J. J., Pyun, D-C., Norwood, R. A., Dereniak, E. L., & Van Der Laan, J. (2014). Sulfur copolymers for infrared optical imaging. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 9070). [90702H] SPIE. https://doi.org/10.1117/12.2057849

Sulfur copolymers for infrared optical imaging. / Namnabat, S.; Gabriel, J. J.; Pyun, Dong-Chul; Norwood, Robert A; Dereniak, E. L.; Van Der Laan, J.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9070 SPIE, 2014. 90702H.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Namnabat, S, Gabriel, JJ, Pyun, D-C, Norwood, RA, Dereniak, EL & Van Der Laan, J 2014, Sulfur copolymers for infrared optical imaging. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 9070, 90702H, SPIE, 40th Conference on Infrared Technology and Applications, Baltimore, MD, United States, 5/5/14. https://doi.org/10.1117/12.2057849
Namnabat S, Gabriel JJ, Pyun D-C, Norwood RA, Dereniak EL, Van Der Laan J. Sulfur copolymers for infrared optical imaging. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9070. SPIE. 2014. 90702H https://doi.org/10.1117/12.2057849
Namnabat, S. ; Gabriel, J. J. ; Pyun, Dong-Chul ; Norwood, Robert A ; Dereniak, E. L. ; Van Der Laan, J. / Sulfur copolymers for infrared optical imaging. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 9070 SPIE, 2014.
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