A multispectral and polarization-selective surface-plasmon resonant midinfrared detector

Abstract

We demonstrate a multispectral polarization sensitive midinfrared dots-in-a-well photodetector utilizing surface-plasmonic resonant elements, with tailorable frequency response and polarization selectivity. The resonant responsivity of the surface-plasmon detector shows an enhancement of up to five times that of an unpatterned control detector. As the plasmonic resonator involves only surface patterning of the top metal contact, this method is independent of light-absorbing material and can easily be integrated with current focal plane array processing for imaging applications.

Plasmonic circuits for manipulating optical information

“…Superconducting plasmon detectors were used to detect single plasmon quanta in a quantum interference experiment [65]. Plasmonic components have been used in detectors to alter the responsivity in the mid-infrared [66] as well as in the visible region [67]. In principle, such detectors can be as sensitive as those used in photonics, which is determined largely by the quality of the semiconductor photo-diode fabrication process.…”

Nanotechnological Enhancement of Infrared Detectors by Plasmon Resonance in Transparent Conductive Oxide Nanoparticles

“…Several strategies were proposed to overcome this. One of them is to form complex patterns on detector surface which may serve as nanoaperture arrays [15] and [16] and which support the existence of the so-called designer ("spoof") plasmons [17]. In this way, the operating wavelength can be tailored to be proportional to the aperture dimensions and the spacing between them.…”

“…In this way, the operating wavelength can be tailored to be proportional to the aperture dimensions and the spacing between them. Wavelengths 7 to 8 mm were obtained in this manner [16]. Another redshifting strategy was to immerse metal nanoparticles into a higher refractive index material, which resulted in shifting the characteristics from the visible part of the spectrum to the wavelengths of up to 1.5 mm [9].…”

“…Another redshifting strategy was to immerse metal nanoparticles into a higher refractive index material, which resulted in shifting the characteristics from the visible part of the spectrum to the wavelengths of up to 1.5 mm [9]. Nanoparticles with sandwich structures were also utilized [16] where e.g. non-plasmonic material is covered by a thin shell of plasmonic material or there are several alternating layers of plasmonic and dielectric materials.…”

Simulation and analysis of grating-integrated quantum dot infrared detectors for spectral response control and performance enhancement

“…[14][15][16][17][18][19][20][21] In addition, the use of such structures can improve the detector efficiency by the many passes light makes or by the increased field intensity in a detector cell. This pixel-level structure can be combined with efficient compressive sensing algorithms to reduce the data volume while increasing the information from the detector.…”