AWG-spectrometer to analyze absorption spectra of optical gas sensors fabricated by femtosecond laser processing

• DOI: 10.1063/5.0188211
• Publication Date: 2024-01-19T01:30:21Z
• Authors: Johann Zehetner; Dana Seyringer; Fadi Dohnal; Stanislava Serecu...; Heinz Seyringer; Ivan Hotovy; Miroslav Mikolasek; Peter Ondrejka; Juraj Hotovy; Vlastimil Rehacek

By a simple femtosecond laser process, we fabricate metal-oxide/gold composite films for electrical and optical gas sensors. We designed dripple wavelength AWG-spectrometer, matched to the plasma absorption region of films. H2/CO absorptions fit well with AWG design multi detection sensor arrays.