Translator Disclaimer
Paper
26 December 1984 Oxide Glasses With Superior Infrared Transmission
Author Affiliations +
Abstract
The glass-forming areas of two new systems based on the oxides of lead, gallium, and bismuth and cadmium, gallium, and bismuth have been mapped out. These glasses can be melted at 1000°C for 20 minutes and cast into homogeneous pieces at least as large as 30 mm X 30 mm X 15 mm. Their expansion coefficients (25°C-200°C) range from 83 X 10-7/°C to 112 X 10-7/°C, and they are relatively soft with Knoop hardness (100g) in the 225 region. The refractive index (ND) is in the vicinity of 2.4. The lower absorption edge is about 470 nm (yellow color) but they transmit out to 81m in 2 mm thickness. This is the best infrared transmission for any oxide glass which is sufficiently stable to devitrificationon cooling from the melt to enable sizeable pieces to be formed.
© (1984) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
William H. Dumbaugh "Oxide Glasses With Superior Infrared Transmission", Proc. SPIE 0505, Advances in Optical Materials, (26 December 1984); https://doi.org/10.1117/12.964633
PROCEEDINGS
5 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

Infrared-Transmitting Oxide Glasses
Proceedings of SPIE (May 12 1986)
Aluminate Glasses - A Review
Proceedings of SPIE (July 18 1988)
Optical fibre made from heavy metal oxide glasses doped by...
Proceedings of SPIE (September 23 2005)
Panel Discussion: The Future In Infrared Fibers
Proceedings of SPIE (December 17 1982)

Back to Top