Guofan Jin

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Benefitting from the flexibility in engineering their optical response, metamaterials have been used to achieve control over the propagation of light to an unprecedented level, leading to highly unconventional and versatile optical functionalities compared with their natural counterparts. Recently, the emerging field of metasurfaces, which consist of a(More)
Surface topography and refractive index profile dictate the deterministic functionality of a lens. The polarity of most lenses reported so far, that is, either positive (convex) or negative (concave), depends on the curvatures of the interfaces. Here we experimentally demonstrate a counter-intuitive dual-polarity flat lens based on helicity-dependent phase(More)
A novel infrared (IR) and visible image fusion method based on nonsubsampled contourlet transform (NSCT) and fuzzy logic is proposed. Input IR and visible images are decomposed into a series of low frequency and high frequency subbands by using NSCT. The degree of membership to the background and the target for each pixel in the low frequency subband of the(More)
The emerging graphene-based material, an atomic layer of aromatic carbon atoms with exceptional electronic and optical properties, has offered unprecedented prospects for developing flat two-dimensional displaying systems. Here, we show that reduced graphene oxide enabled write-once holograms for wide-angle and full-colour three-dimensional images. This is(More)
Interference-based optical image encryption has triggered much current attention due to its marked advantages, such as non-iterative operation. However, the precise alignment requirements of the phase-only masks in two different planes restrict the experimental verification. Few experimental results have been reported about the optical interference(More)
To order the complete compilation report, use: ADA399082 The component part is provided here to allow users access to individually authored sections f proceedings, annals, symposia, etc. However, the component should be considered within [he context of the overall compilation report and not as a stand-alone technical report. ABSTRACT The volume holographic(More)
Principle researcher of an NIH-funded project " Photonic crystal for biomolecular detection "-Performed comprehensive studies of principle, simulation, design, fabrication and demonstration of this photonic crystal-based biosensor-Developed a prototype optical system and demonstrated its capability of detecting the binding of very small molecules (< 100(More)