title: 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.
authors.affiliation: Columbia Laboratory for Unconventional Electronics, Department of Electrical Engineering, Columbia University, New York, 10027, USA. nadia.pervez@gmail.com
authors.forename: Nadia K
authors.initials: NK
authors.lastname: Pervez
authors.forename: Warren
authors.initials: W
authors.lastname: Cheng
authors.forename: Zhang
authors.initials: Z
authors.lastname: Jia
authors.forename: Marshall P
authors.initials: MP
authors.lastname: Cox
authors.forename: Hassan M
authors.initials: HM
authors.lastname: Edrees
authors.forename: Ioannis
authors.initials: I
authors.lastname: Kymissis