Tunable narrowband mid-infrared thermal emitter with a bilayer cavity enhanced Tamm plasmon

2018 ◽  
Vol 43 (21) ◽  
pp. 5230 ◽  
Author(s):  
Huanzheng Zhu ◽  
Hao Luo ◽  
Qiang Li ◽  
Ding Zhao ◽  
Lu Cai ◽  
...  
Keyword(s):  
Mid Infrared ◽  
Thermal Emitter

scholarly journals Aperiodic multilayer graphene based tunable and switchable thermal emitter at mid-infrared frequencies

2018 ◽  
Vol 124 (23) ◽  
pp. 233101 ◽  
Author(s):  
S. Sharifi ◽  
Y. M. Banadaki ◽  
V. F. Nezhad ◽  
G. Veronis ◽  
J. P. Dowling
Keyword(s):  
Multilayer Graphene ◽  
Mid Infrared ◽  
Thermal Emitter ◽  
Infrared Frequencies

scholarly journals Highly Selective CMOS-Compatible Mid-Infrared Thermal Emitter/Detector Slab Design Using Optical Tamm-States

Materials ◽  
2019 ◽  
Vol 12 (6) ◽  
pp. 929 ◽  
Author(s):  
Gerald Pühringer ◽  
Bernhard Jakoby
Keyword(s):  
Field Enhancement ◽  
Oxide Semiconductor ◽  
Co2 Absorption ◽  
Original Design ◽  
Mid Infrared ◽  
One Dimensional ◽  
Sensing Applications ◽  
Thermal Emitter ◽  
Cmos Compatible ◽  
Silicon Slab

In this work, we propose and evaluate a concept for a selective thermal emitter based on Tamm plasmons suitable for monolithic on-chip integration and fabrication by conventional complementary metal oxide semiconductor (CMOS)-compatible processes. The original design of Tamm plasmon structures features a purely one-dimensional array of layers including a Bragg mirror and a metal. The resonant field enhancement next to the metal interface corresponding to optical Tamm states leads to resonant emission at the target wavelength, which depends on the lateral dimensions of the bandgap structure. We demonstrate the application of this concept to a silicon slab structure instead of deploying extended one dimensional layers thus enabling coupling into slab waveguides. Here we focus on the mid-infrared region for absorption sensing applications, particularly on the CO2 absorption line at 4.26 µm as an example. The proposed genetic-algorithm optimization process utilizing the finite-element method and the transfer-matrix method reveals resonant absorption in case of incident modes guided by the slab and, by Kirchhoff’s law, corresponds to emittance up to 90% depending on different choices of the silicon slab height when the structure is used as a thermal emitter. Although we focus on the application as an emitter in the present work, the structure can also be operated as an absorber providing adjusted lateral dimensions and/or exchanged materials (e.g., a different choice for metal).

scholarly journals Wideband mid-infrared thermal emitter based on stacked nanocavity metasurfaces

2021 ◽  
Author(s):  
Tun Cao ◽  
Meng Lian ◽  
Xianchao Lou ◽  
Kuan Liu ◽  
Yaoming Guo ◽  
...  
Keyword(s):  
Thermal Radiation ◽  
Thermal Imaging ◽  
Polarized Light ◽  
Infrared Light ◽  
Light Sources ◽  
Mid Infrared ◽  
Atmospheric Window ◽  
Thermal Emitters ◽  
Thermal Emitter ◽  
Promising Avenue

Abstract Efficient thermal radiation in the mid-infrared (M-IR) region is of supreme importance for many applications including thermal imaging and sensing, thermal infrared light sources, infrared spectroscopy, emissivity coatings, and camouflage. The capability of controlling light makes metasurface an attractive platform for infrared applications. Recently, different metamaterials have been proposed to achieve high thermal radiation. To date, broadening of the radiation bandwidth of metasurface emitter (meta-emitter) has become a key goal to enable extensive applications. We experimentally demonstrate a broadband M-IR thermal emitter using stacked nanocavity metasurface consisting of two pairs of circular-shaped dielectric (Si3N4) – metal (Au) stacks. A high thermal radiation can be obtained by engineering the geometry of nanocavity metasurface. Such a meta-emitter provides wideband and broad angular absorptance of both p- and s-polarized light, offering a wideband thermal radiation with an average emissivity of more than 80% in the M-IR atmospheric window of 8–14 μm. The experimental illustration together with theoretical framework places a basis for designing broadband thermal emitters, which, as anticipated, will initiate a promising avenue to M-IR source.

Ultra-narrowband mid-infrared absorber based on Mie resonance in dielectric metamaterials

2020 ◽  
Vol 98 (5) ◽  
pp. 484-487 ◽  
Author(s):  
Yan-Lin Liao ◽  
Yan Zhao
Keyword(s):  
Magnetic Field ◽  
Absorption Rate ◽  
Resonance Wavelength ◽  
Mid Infrared ◽  
Absorption Bandwidth ◽  
Mie Resonance ◽  
Thermal Emitter ◽  
Simulation Results ◽  
Simulated Field ◽  
High Absorption

Ultra-narrowband absorbers can be applied in many applications. We propose a mid-infrared ultra-narrowband absorber with TM polarization (magnetic field is parallel to grating grooves) based on dielectric metamaterials in this paper. The simulation results show that the absorption rate larger than 0.99 can be achieved at the resonance wavelength, and the absorption bandwidth is less than 10 nm. The simulated field distribution shows that the ultra-narrowband absorption in this absorber originates from Mie resonance. In addition, the absorber preserves high absorption rates up to 4° which means that our absorber has high directivity. Our results show that the ultra-narrowband absorbers can be applied as a thermal emitter.

Characterisation of a resonant-cavity enhanced thermal emitter for the mid-infrared

2017 ◽  
Author(s):  
Thomas Sollradl ◽  
Christian Ranacher ◽  
Cristina Consani ◽  
Gerald Puhringer ◽  
Surabhi Lodha ◽  
...  
Keyword(s):  
Resonant Cavity ◽  
Mid Infrared ◽  
Thermal Emitter

Highly efficient and broadband mid-infrared metamaterial thermal emitter for optical gas sensing

2017 ◽  
Vol 42 (21) ◽  
pp. 4537 ◽  
Author(s):  
Yongkang Gong ◽  
Zuobin Wang ◽  
Kang Li ◽  
Leshan Uggalla ◽  
Jungang Huang ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Mid Infrared ◽  
Highly Efficient ◽  
Thermal Emitter ◽  
Optical Gas Sensing
Sign in / Sign up

Export Citation Format

Share Document