Artificial micro- and nano-structure enhanced long and very long-wavelength infrared detectors

The infrared detectors own the ability to convert information carried by photons radiated objects into electrical signals, which broadens horizons of human beings observing natural environment and activities. At present, long very long-wavelength detections have many applications in atmospheric monitoring, biological spectroscopy, night vision, etc. As demand for high-performance grows rapidly, it is difficult traditional arrive at performance indicators such as high response rate, speed, multi-dimensional detection. artificial structure designed based on micro- nano-optics can be coupled with efficiently, control degrees freedom light fields amplitude, polarization, phase, wavelength comprehensively. systems integrated nano-photonic structures provide additional controllable detectors. And they are expected achieve quantum efficiency other merits excellent selectivity. In this review paper, research progress application nano-structure bands presented; advantages, disadvantages, status different mechanisms described detail, include surface plasmon polaritons, localized plasmon, resonant cavity structure, photon-trapping metalens, spoof gap phonon polariton. addition, development prospect direction long-wave devices further pointed out.