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Journal of Nanophotonics

Miniaturization of optical spectroscopes into Fresnel microspectrometers
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Paper Abstract

Miniaturized optical instruments have become very important in industry as smart phones and tablet PCs increase in popularity. A chronology of spectrometer development shows that a simple numerical point of view affords important insights. A tiny spectrometer, which is smaller than a few millimeters size, cannot easily rely on the conventional Fraunhofer diffraction due to its optical criterion limit. As an alternate solution to build smaller spectrometers, a Fresnel spectrometer chip with a gradient line grating is attractive. The fabricated Fresnel spectrometers have optical path volumes of about 1 mm3 and spectral resolutions of 10 to 23 nm.

Paper Details

Date Published: 3 June 2013
J. Nanophoton. 7(1) 077599 doi: 10.1117/1.JNP.7.077599
Published in: Journal of Nanophotonics Volume 7, Issue 1
Show Author Affiliations
Yeonjoon Park, National Institute of Aerospace (United States)
Sang H. Choi, NASA Langley Research Ctr. (United States)

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