Detector-Only Spectrometer Based on Structurally Colored Silicon Nanowires and a Reconstruction Algorithm
Jiajun Meng, Jasper J Cadusch, Kenneth B Crozier
NANO LETTERS | AMER CHEMICAL SOC | Published : 2020
Spectroscopy is a cornerstone in the field of optics. Conventional spectrometers generally require two elements. The first provides wavelength selectivity, for example, diffraction grating or Michelson interferometer. The second is a detector (or detector array). Many applications would benefit from very small and lightweight spectrometers. This motivates us to investigate what may be regarded as an ultimate level of miniaturization for a spectrometer, in which it consists solely of a detector array. We demonstrate a chip containing 24 pixels, each comprising a silicon nanowire (Si NW) array photodetector formed above a planar photodetector. The NWs are structurally colored, enabling us to e..View full abstract
Related Projects (2)
Awarded by Australian Research Council
This work was supported by the Australian Research Council (LP1601009S9), by Palette, and by VESKI. This work was performed in part at the Melbourne Centre for Nano fabrication (MCN) in the Victorian Node of the Australian National Fabrication Facility (ANFF).