A split imaging spectrometer for temporally and spatially resolved titanium absorption spectroscopy

2014 ◽  
Vol 85 (11) ◽  
pp. 11D601 ◽  
Author(s):  
J. D. Hager ◽  
N. E. Lanier ◽  
J. L. Kline ◽  
K. A. Flippo ◽  
H. C. Bruns ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Imaging Spectrometer ◽  
Spatially Resolved

scholarly journals Spatially Resolved Cross-Linking Characterization by Imaging Low-Coherence Interferometry

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1152 ◽  
Author(s):  
Christopher Taudt ◽  
Bryan Nelsen ◽  
Elisabeth Rossegger ◽  
Sandra Schlögl ◽  
Edmund Koch ◽  
...  
Keyword(s):  
Refractive Index ◽  
Optical Thickness ◽  
Information Acquisition ◽  
Cross Linking ◽  
Imaging Spectrometer ◽  
Low Coherence ◽  
Spatially Resolved ◽  
Low Coherence Interferometry ◽  
Error Estimations ◽  
Phase Data

A method to characterize cross-linking differences in polymers such as waveguide polymers has been developed. The method is based on the scan-free information acquisition utilizing a low-coherence interferometer in conjunction with an imaging spectrometer. By the introduction of a novel analyzing algorithm, the recorded spectral-phase data was interpreted as wavelength-dependent optical thickness which is matchable with the refractive index and therefore with the degree of cross-linking. In the course of this work, the method was described in its hardware and algorithmic implementation as well as in its accuracy. Comparative measurements and error estimations showed an accuracy in the range of 10−6 in terms of the refractive index. Finally, photo-lithographically produced samples with laterally defined cross-linking differences have been characterized. It could be shown, that differences in the optical thickness of ±1.5 μm are distinguishable.

Spatially resolved micro-absorption spectroscopy with a broadband source and confocal detection

2015 ◽  
Vol 355 ◽  
pp. 533-537 ◽  
Author(s):  
Silki Arora ◽  
Jennifer Mauser ◽  
Debopam Chakrabarti ◽  
Alfons Schulte
Keyword(s):  
Absorption Spectroscopy ◽  
Spatially Resolved ◽  
Confocal Detection
Sign in / Sign up

Export Citation Format

Share Document