title: Super spectral resolution beyond pixel Nyquist limits on multi-channel spectrometer.
abstract: 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.
authors.forename: Tsuyoshi
authors.initials: T
authors.lastname: Konishi
authors.forename: Yu
authors.initials: Y
authors.lastname: Yamasaki
authors.forename: Tomotaka
authors.initials: T
authors.lastname: Nagashima