Super spectral resolution beyond pixel Nyquist limits on multi-channel spectrometer | Zendy

Tsuyoshi Konishi | Zendy; Yu Yamasaki | Zendy; T. Nagashima | Zendy

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Super spectral resolution beyond pixel Nyquist limits on multi-channel spectrometer

Author(s) -

Tsuyoshi Konishi,

Yu Yamasaki,

T. Nagashima

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.026583

Subject(s) - nyquist frequency , optics , nyquist–shannon sampling theorem , pixel , spectrometer , spectral resolution , physics , resolution (logic) , image resolution , robustness (evolution) , spectral imaging , computer science , bandwidth (computing) , spectral line , telecommunications , artificial intelligence , computer vision , biochemistry , chemistry , astronomy , gene

Enhancement of the resolution of well-distributed multi-channel spectrometers beyond the pixel Nyquist limits while maintaining their inherent advantages such as high-speed measurement, compactness, and robustness will represent a critical step toward real-time monitoring of dynamic events. Here, we report the first super spectral resolution measurement beyond pixel Nyquist limits which was made possible by employing the Moiré effect in a commercially available Czerny-Turner type spectroscope of 4.63nm-spectral resolution. The experimental results show that the spectral resolution can be enhanced up to 0.31 nm by a factor of more than 10 with exceeding the 50-μm pixel Nyquist limits.

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