Measurement of the refractive index dispersion of As2Se3 bulk glass and thin films prior to and after laser irradiation and annealing using prism coupling in the near- and mid-infrared spectral range

Journal Article · Sun May 01 04:00:00 EDT 2011 · Review of Scientific Instruments, 82(5):Art. No. 053103

DOI:https://doi.org/10.1063/1.3587616· OSTI ID:1024071

Carlie, Nathan; Anheier, Norman C; Qiao, Hong ^[1]; Bernacki, Bruce E; Phillips, Mark C; Petit, Laticia; Musgraves, Jonathan D; Richardson, Kathleen

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1. Amy

The prism coupling technique has been utilized to measure the refractive index in the near- and mid-IR spectral region of chalcogenide glasses in bulk and thin film form. A commercial system (Metricon model 2010) has been modified with additional laser sources, detectors, and a new GaP prism to allow the measurement of refractive index dispersion over the 1.5–10.6 μm range. The instrumental error was found to be ±0.001 refractive index units across the entire wavelength region examined. Measurements on thermally evaporated AMTIR2 thin films confirmed that (i) the film deposition process provides thin films with reduced index compared to that of the bulk glass used as a target, (ii) annealing of the films increases the refractive index of the film to the level of the bulk glass used as a target to create it, and (iii) it is possible to locally increase the refractive index of the chalcogenide glass using laser exposure at 632.8 nm.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1024071
• Report Number(s): PNNL-SA-81440; 600306000
• Journal Information: Review of Scientific Instruments, 82(5):Art. No. 053103, Journal Name: Review of Scientific Instruments, 82(5):Art. No. 053103 Journal Issue: 5 Vol. 82; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
ANNEALING
CHALCOGENIDES
DEPOSITION
GLASS
IRRADIATION
LASERS
PRISMS
REFRACTIVE INDEX
TARGETS
THIN FILMS
WAVELENGTHS
prism coupler
optical metrology
chalcogenide glass