Photonic Crystal Spectrometer
Abstract
We demonstrate a new kind of optical spectrometer employing photonic crystal patterns to outcouple waveguided light from a transparent substrate. This spectrometer consists of an array of photonic crystal patterns, nanofabricated in a polymer on a glass substrate, combined with a camera. The camera captures an image of the light outcoupled from the patterned substrate; the array of patterns produces a spatially resolved map of intensities for different wavelength bands. The intensity map of the image is converted into a spectrum using the photonic crystal pattern response functions. We present a proof of concept by characterizing a white LED with our photonic crystal spectrometer.
Cite
@article{arxiv.1001.0580,
title = {Photonic Crystal Spectrometer},
author = {Nadia K. Pervez and Warren Cheng and Zhang Jia and Marshall P. Cox and Hassan M. Edrees and Ioannis Kymissis},
journal= {arXiv preprint arXiv:1001.0580},
year = {2015}
}
Comments
9 pages, 6 figures; discussion of light extraction and more experimental details added