All-chalcogenide glass omnidirectional photonic band gap variable infrared filters

Date
2009
Advisor
Instructor
Source Title
Applied Physics Letters
Print ISSN
1077-3118
Electronic ISSN
Publisher
AIP Publishing
Volume
94
Issue
11
Pages
111110-1 - 111110-3
Language
English
Type
Article
Journal Title
Journal ISSN
Volume Title
Abstract

We report on the design, fabrication, and characterization of spatially variable infrared photonic band gap filter that consists of thermally evaporated, high refractive indexcontrast, amorphous chalcogenide glass multilayers. Due to graded thickness structure, the filter exhibits a position dependent stop band and a cavity mode ranging from 1.8 to 3.4 μm3.4 μmwavelengths. Reflection measurements on the variable filter agree well with theoretical calculations. These results pave the way to low-loss infrared mirrors, filters, spectral imaging, and miniaturized spectrometers at infrared region.

Course
Other identifiers
Book Title
Keywords
Energy gap, Glass, Infrared spectrometers, Optical devices, Refractive index, Amorphous chalcogenides, Cavity modes, Chalcogenide glass, High refractive index contrasts, Infrared filters, Infrared regions, Low loss, Photonic band gap filters, Photonic bands, Reflection measurements, Spectral imaging, Stop bands, Theoretical calculations, Variable filters, Photonic band gap
Citation
Published Version (Please cite this version)