Midwave thermal infrared detection using semiconductor selective absorption

Low Absorption Liquid Crystal Materials for Midwave Infrared

Human Detection using Infrared Thermal Imaging System

Image processing techniques were used to enhance the recorded thermal images and to remove unwanted noise. The skin surface area centered on the tip of the face was specified by a square that covered the region using Haarlike feature method. The face is detected and then tracked. The camera adjusts its pan and tilt continuously to capture the face at center location of display screen. Experimen...

Silicon photonics in midwave and longwave infrared

Optical data communication is not the only area where silicon photonics will have an impact. Silicon and related group 4 crystals have excellent linear and nonlinear optical properties in the midwave and longwave infrared spectrum [1-6]. These properties, along with silicon’s excellent thermal conductivity and optical damage threshold, open up the possibility for a new class of midwave and long...

Near-infrared–to–visible highly selective thermal emitters based on an intrinsic semiconductor

Control of the thermal emission spectra of emitters will result in improved energy utilization efficiency in a broad range of fields, including lighting, energy harvesting, and sensing. In particular, it is challenging to realize a highly selective thermal emitter in the near-infrared-to-visible range, in which unwanted thermal emission spectral components at longer wavelengths are significantl...

All-Semiconductor Plasmonic Resonator for Surface-Enhanced Infrared Absorption Spectroscopy

Infrared absorption spectroscopy remains a challenge due to the weak light-matter interaction between micron-wavelengthed infrared light and nano-sized molecules. A highly doped semiconductor supports intrinsic plasmon modes at infrared frequencies, and is compatible with the current epitaxial growth processing, which makes it promising for various applications. Here, we propose an all-semicond...