PbTe photovoltaic mid-IR detectors

On-chip chalcogenide glass waveguide-integrated mid-infrared PbTe detectors

Resonant cavity enhancement of polycrystalline PbTe films for IR detectors on Si-ROICs

In this paper, we demonstrate high optical quantum efficiency (90%) resonant-cavity-enhanced mid-infrared photodetectors fabricated monolithically on a silicon platform. High quality photoconductive polycrystalline PbTe film is thermally evaporated, oxygen-sensitized at room temperature and acts as the infrared absorber. The cavity-enhanced detector operates in the critical coupling regime and ...

A Combined Mid-IR/Near-IR Spectrometer

When analysts are faced with the decision of selecting either mid-IR (MIR) or near-IR (NIR) spectroscopy for materials characterization, the decision is usually based on the analytical, sampling, and/ or operational needs. For example, when the greatest analytical specificity is required or certain inorganic materials need to be measured, the choice favors MIR; whereas the need to keep an unsta...

Mid-IR Silicon Raman Lasers

Silicon is arguably the best Raman medium for the mid-wave infrared spectrum. This new technology can expand the application space of silicon photonics beyond data communication and into biochemical sensing, laser medicine, and LIDAR.

Near-ir and Mid-ir Process Analysis — a Critical Comparison

Over the past several years, both near infrared (NIR) and mid infrared (MIR) spectroscopy have steadily gained acceptance as powerful methods for at-line and on-line analysis. These methods share the advantages of high speed, robust calibration, and low service requirements compared to more established process analytical techniques such as gas chromatography. However, despite their many similar...