Concept

Infrared photography

Related publications (141)

Two-color GaN/AlGaN quantum cascade detector at short infrared wavelengths of 1 and 1.7 micron

Nicolas Grandjean, Etienne François Olivier Giraud

A two-color GaN-based quantum cascade detector is demonstrated. This photodetector operates simultaneously at a peak wavelength of 1.7 and 1 mu m at room temperature without any external voltage. These peaks correspond, respectively, to the e(1)e(2) and e( ...

American Institute of Physics2012

3D near-infrared imaging based on a single-photon avalanche diode array sensor

Edoardo Charbon, Juan Mata Pavia, Martin Wolf

Near-infrared light can be used to determine the optical properties (absorption and scattering) of human tissue. Optical tomography uses this principle to image the internal structure of parts of the body by measuring the light that is scattered in the tis ...

2012

Automatic and Accurate Shadow Detection using Near-Infrared Information

Sabine Süsstrunk, Dominic Rüfenacht

We present a method to automatically detect shadows in a fast and accurate manner by employing the inherent sensitivity of digital camera sensors to the near-infrared (NIR) part of the spectrum. Shadows are generally found in the dark parts of an image, be ...

2012

3D near-infrared imaging based on a single-photon avalanche diode array sensor: A new perspective on reconstruction algorithms

Edoardo Charbon, Juan Mata Pavia, Bastien Wolf

Recently, we demonstrated the potential of single-photon i magers in diffuse optical tomography (DOT). We present the advances of a new algorithm based on optical setups using this kind of sensors. ...

2012

Light induced fluidic waveguide coupling

Christophe Moser, Eric Tremblay, Volker Günter Zagolla

We report on the development of an opto-fluidic waveguide coupling mechanism for planar solar concentration. This mechanism is self-adaptive and light-responsive to efficiently maintain waveguide coupling and concentration independent of incoming light's d ...

Optical Soc Amer2012

Near-infrared sensitization of solid-state dye-sensitized solar cells with a squaraine dye

Michael Graetzel, Mohammad Khaja Nazeeruddin, Amalie Dualeh

Here, we report the use of a squaraine-based dye, JD10, as a near-infrared sensitizer for solid-state dye-sensitized solar cells (ssDSCs). Using spiro-MeOTAD as a hole-transport material, JD10 gave the highest reported power conversion efficiencies (PCE), ...

American Institute of Physics2012

Infrared phonon anomaly and magnetic excitations in single-crystal Cu3Bi(SeO3)(2)O2Cl

Helmuth Berger

Infrared reflection and transmission as a function of temperature have been measured on single crystals of Cu3Bi(SeO3)(2)O2Cl. The complex dielectric function and optical properties along all three principal axes of the orthorhombic cell were obtained via ...

Amer Physical Soc2012

Semantic Image Segmentation Using Visible and Near-Infrared Channels

Sabine Süsstrunk, Neda Salamati

Recent progress in computational photography has shown that we can acquire physical information beyond visible (RGB) image representations. In particular, we can acquire near-infrared (NIR) cues with only slight modification to any standard digital camera. ...

Springer Berlin Heidelberg2012

Mode tuning of photonic crystal nanocavities by photoinduced non-thermal oxidation

Laurent Balet, Massimo Gurioli, Santosh Kumar

A method to achieve photoinduced tuning of PhC nanocavity modes is discussed and implemented. It is based on light induced oxidation in air atmosphere with very low thermal budget which produces a local reduction of the GaAs membrane effective thickness an ...

2012

Mid-infrared frequency combs

Albert Schliesser

Laser frequency combs are coherent light sources that emit a broad spectrum of discrete, evenly spaced narrow lines whose absolute frequency can be measured to within the accuracy of an atomic clock. Their development in the near-infrared and visible domai ...

2012

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