Hyperspectral remote-sensing in the reflected infrared and thermal infrared regions offers a unique and efficient alternative for mineral mapping, as most minerals exhibit spectral features in these regions, mainly in the shortwave and longwave infrared. Airborne hyperspectral data in both spectral regions, acquired with the AisaFENIX and AisaOWL (Specim) sensors over Makhtesh Ramon in Israel, ...

An important parameter that defines the effectiveness and efficiency of any optical or infrared sky survey is the atmospheric characteristics of the observing site. Of prime importance is the sky spectral brightness, which determines the sensitivities and the observing time required to complete a particular survey. This paper presents observations of the near-infrared sky spectral brightness me...

MATISSE is foreseen as a mid-infrared spectro-interferometer combining the beams of up to four UTs/ATs of the Very Large Telescope Interferometer (VLTI) of the European Southern Observatory. The related science case study demonstrates the enormous capability of a new generation mid-infrared beam combiner. MATISSE will constitute an evolution of the two-beam interferometric instrument MIDI. MIDI...

Theory predicts a distinct spectral shift between the near- and far-field optical response of plasmonic antennas. Here we combine near-field optical microscopy and far-field spectroscopy of individual infrared-resonant nanoantennas to verify experimentally this spectral shift. Numerical calculations corroborate our experimental results. We furthermore discuss the implications of this effect in ...

1. ABSTRACT A new methodology to retrieve cloud optical properties using hyper-spectral infrared measurements is presented. The new method makes use of line by line multiple scattering (LbLMS) simulations to retrieve spectrally resolved cloud optical depths from spectral radiance data. The retrieval requires knowledge of the clear sky profile and cloud boundaries. The cloud microphysical proper...

We present JHKL photometry of a complete sample of steep-spectrum radio-loud quasars from the revised 3CR catalogue in the redshift range 0.65 ≤ z < 1.20. After correcting for contributions from emission lines and the host galaxies, we investigate their spectral energy distributions (SEDs) around 1μm. About 75% of the quasars are tightly grouped in the plane of optical spectral index, αopt, ver...

BACKGROUND Infrared spectroscopy probes the chemical composition and molecular structure of complex systems such as tissue and cells. Infrared spectroscopic imaging combines this spectral information with lateral resolution near the single-cell level. We analyzed whether this method is competitive with classic immunohistochemical methods for immunologic tissue and cells. METHODS We recorded i...

In supercontinuum generation, various propagation effects combine to produce a dramatic spectral broadening of intense ultrashort optical pulses. With a host of applications, supercontinuum sources are often required to possess a range of properties such as spectral coverage from the ultraviolet across the visible and into the infrared, shot-to-shot repeatability, high spectral energy density a...

Infrared spectral (or chemical) imaging is emerging as an exciting new tool in forensic analysis. Here we present some of our work in the application of infrared spectral imaging to different types of trace evidence: automotive paint chips, bicomponent fibers and the detection of illicit substances in fingerprints. INTRODUCTION Fourier Transform Infrared (FTIR) spectral (or chemical) imaging is...