APDs as single-photon detectors for visible and near-infrared wavelengths down to Hz rates

Titanium nitride as a plasmonic material for visible and near-infrared wavelengths

The search for alternative plasmonic materials with improved optical properties, easier fabrication and integration capabilities over those of the traditional materials such as silver and gold could ultimately lead to real-life applications for plasmonics and metamaterials. In this work, we show that titanium nitride could perform as an alternative plasmonic material in the visible and near-inf...

Ultimate sensitivity of superconducting single-photon detectors in the visible to infrared range

We present our quantum efficiency (QE) and noise equivalent power (NEP) measurements of the meandertype ultrathin NbN superconducting single-photon detector in the visible to infrared radiation range. The nanostructured devices with 3.5-nm film thickness demonstrate QE up to ~10% at 1.3 – 1.55 μm wavelength, and up to 20% in the entire visible range. The detectors are sensitive to infrared radi...

Near-Infrared Single-Photon Detection

Single Photon Avalanche Photodiodes for Near-Infrared Photon Counting

InP-based single photon avalanche diodes (SPADs) have proven to be the most practical solution currently available for many applications requiring high-performance photon counting at near-infrared wavelengths between 1.0 and 1.6 μm. We describe recent progress in the design, characterization, and modeling of InP-based SPADs, particularly with respect to the dark count rate vs. photon detection ...

Avalanche Photodiodes As Single Photon Detectors