title: High-resolution two-dimensional image upconversion of incoherent light.
abstract: We consider a technique for high-resolution image upconversion of thermal light. Experimentally, we demonstrate cw upconversion with a resolution of more than 200 × 1000 pixels of thermally illuminated objects. This is the first demonstration (to our knowledge) of high-resolution cw image upconversion. The upconversion method promises an alternative route to high-quantum-efficiency all-optical imaging in the mid-IR wavelength region and beyond using standard CCD cameras. A particular advantage of CCD cameras compared to state-of-the-art thermal cameras is the possibility to tailor and tune the spectral response leading to functional spectral imaging.
authors.affiliation: DTU Fotonik, Technical University of Denmark, DK-4000 Roskilde, Denmark. jdam@fotonik.dtu.dk
authors.forename: Jeppe Seidelin
authors.initials: JS
authors.lastname: Dam
authors.forename: Christian
authors.initials: C
authors.lastname: Pedersen
authors.forename: Peter
authors.initials: P
authors.lastname: Tidemand-Lichtenberg