Photonic Crystal Spectrometer

Details Photonic Crystal Spectrometer Photonic Crystal Spectrometer

2010-01-04

arxiv.org/abs/1001.0580v2

Physics

Optics

9 pages, 6 figures; discussion of light extraction and more experimental details added

Scientific paper

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.

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