High efficiency optical coupling in long wavelength quantum cascade infrared detector via quasi-one-dimensional grating plasmonic micro-cavity

Li, Lu; Xiong, Dayuan; Zhou, Tuo; Wen, Jin; Li, N.; Chen, P. P.; Zhu, Z. Q.

doi:10.1063/1.4977239

Cited by 7 publications

(4 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…QCDs are usually designed to contain several periods, and each period composed of two main parts [23,24] which are the absorption part and transport part. Generally, the absorption part is a doped QW for incident light absorption.…”

Section: Methodsmentioning

confidence: 99%

Long wavelength infrared quantum cascade detector with a broadband response

Li¹,

Zhou²,

Zhou³

et al. 2018

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

A novel structure to achieve long wavelength infrared broadband detection ranging from 7.6–10.4 µm is proposed via quantum cascade detector. With a pair of identical coupled quantum wells separated by a thin barrier, acting as absorption regions, the relative linewidth (ΔE/E) of response can be dramatically broadened to 30.7%. Moreover, this structure introduces about 30% enhancement in blackbody responsivity. It is shown that the spectral shape can be tuned by the bias voltage effectively, while it is insensitive to the working temperature. The device can work at liquid nitrogen temperature with Johnson noise limited blackbody detectivity of 5.4 × 108 Jones.

show abstract

Section: Methodsmentioning

confidence: 99%

Long wavelength infrared quantum cascade detector with a broadband response

Li¹,

Zhou²,

Zhou³

et al. 2018

J. Phys. D: Appl. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

“…The coupling efficiency (CE) of the active region in the quantum wells structure can be calculated using the following equation [13]:…”

Section: Methodsmentioning

confidence: 99%

“…In this paper, we present a double L-shaped chiral metasurface-enhanced long-wavelength GaAs/AlGaAs QWIP that achieves a high circular polarization extinction ratio (CPER) up to 45 in the long-wavelength infrared range of 7-9 µm. Here, CPER represents the ratio of coupling efficiency [13] under LCP light to that under RCP light. The chiral structure employs a special double L design that exhibits a CPER 14 times higher than that of a single L structure.…”

Section: Introductionmentioning

confidence: 99%

Multi-Mode Long-Wavelength GaAs/AlGaAs Quantum Well Infrared Photodetectors for Circular Polarization Detection

Feng,

Jiang,

Zhao

et al. 2024

Photonics

View full text Add to dashboard Cite

We present an integrated device combining a double L-shaped chiral metasurface with long-wavelength GaAs/AlGaAs quantum well infrared photodetectors (QWIPs), achieving a circular polarized extinction ratio (CPER) as high as 45 in the long-wavelength infrared range of 7–9 μm. The unit of the chiral metasurface array consists of two structurally identical L-shaped gold structures with central symmetry. The CPER of the double L-shaped QWIPs is 14 times higher than that of a single L-shaped QWIP. The device operates in three modes within the detection band: the microcavity mode, the surface plasmon polariton (SPP) mode, and the hybrid mode. The double L-shaped chiral structure selects and reflects a small portion of left-handed circularly polarized light (LCP), while the majority enters the device and excites SPP modes with the bottom gold grating layer, leading to an absorption enhancement. In contrast, right-handed circularly polarized light (RCP) is mostly reflected with limited excitation of SPP waves. QWIPs exhibit a peak absorption of 0.8 and a coupling efficiency of 2700% in the active region of the quantum well due to the combined effects of the microcavity and SPP modes, in which the SPP mode plays a dominant role. The proposed device maintains high circular polarization discrimination capability under large incident angles and can be applied in spectral imaging.

show abstract

“…The development of modern nanoscale devices that can operate in the terahertz and infrared ranges of electromagnetic waves, in particular, quantum cascade lasers (QCLs) and detectors (QCDs) [1][2][3][4], is a main part of semiconductor physics and technology. It leads to significant scientific and technical interest in multilayer semiconductor resonant tunneling structures (RTS) -plane nanosystems, which are precision active elements of the cascades for mentioned devices.…”

Section: Introductionmentioning

confidence: 99%

Electron-acoustic Phonon Interaction in AlAs/GaAlAs Resonance Tunneling Nanostructures

Boyko¹,

Petryk²

2020

J. Nano- Electron. Phys.

View full text Add to dashboard Cite

In paper, using exact solutions of the stationary Schrödinger equation and the equation of motion for an elastic semiconductor medium, using the secondary quantization formalism, the theory of interaction of electrons with acoustic phonons in a multilayer arsenide-based AlAs/GaAlAs resonant tunneling structure is developed. Using the Matsubara Green's functions and the Dyson equation, expressions, which describe the temperature energy shifts of electronic levels in the nanostructure and their decay rates, are established. Direct calculations of the quantities characterizing the interaction of electrons with acoustic phonons are performed on the basis of physical and geometric parameters of a typical nanostructure, and their dependences on the geometric design of the total potential well of the nanosystem at various temperatures are studied. It is shown that the influence of acoustic phonons leads to the decrease in the quantum electronic transitions frequency in the studied nanostructure, and this effect becomes more noticeable with increasing temperature. It has been established that the absolute values of the electronic stationary states temperature shifts decreases with the increase in the electronic stationary level number. Also, an increase in the temperature entails an increase in the electronic states decay rates that is a dissipation effect directly affecting electronic processes in nanostructures.

show abstract

High efficiency optical coupling in long wavelength quantum cascade infrared detector via quasi-one-dimensional grating plasmonic micro-cavity

Cited by 7 publications

References 35 publications

Long wavelength infrared quantum cascade detector with a broadband response

Long wavelength infrared quantum cascade detector with a broadband response

Multi-Mode Long-Wavelength GaAs/AlGaAs Quantum Well Infrared Photodetectors for Circular Polarization Detection

Electron-acoustic Phonon Interaction in AlAs/GaAlAs Resonance Tunneling Nanostructures

Contact Info

Product

Resources

About