Static two-dimensional aperture coding for multimodal, multiplex spectroscopy.
We propose a new class of aperture-coded spectrometer that is optimized for the spectral characterization of diffuse sources. The instrument achieves high throughput and high spectral resolution by replacing the slit of conventional dispersive spectrometers with a more complicated spatial filter. We develop a general mathematical framework for deriving the required aperture codes and discuss several appealing code families. Experimental results validate the performance of the instrument.
Gehm
Michael E
ME
Duke University Fitzpatrick Center for Photonics, Durham, North Carolina 27708, USA. mgehm@ee.duke.edu
McCain
Scott T
ST
Pitsianis
Nikos P
NP
Brady
David J
DJ
Potuluri
Prasant
P
Sullivan
Michael E
ME
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007089:Image Enhancement / Q000295:instrumentation* / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013057:Spectrum Analysis / Q000295:instrumentation* / Q000379:methods