An epsilon-near-zero-based Dallenbach absorber
Source abstract
Abstract
We report a theoretical analysis of total absorption conditions in a structure consisting of a lossy coating layer on top of a specular metal substrate, which is known as a Dallenbach absorber. All possible combinations of complex refractive indices of the coating material and thicknesses of the coating layer providing complete absorption are described for the case of normal incidence of a plane wave. The work of coatings based on epsilon-near-zero (ENZ) materials is analyzed in detail. Simple analytical relations are obtained for the conditions of total absorption. It is shown that the range of angles where strong absorption occurs is limited by the phenomenon of total external reflection. The characteristics of coatings based on indium-tin oxide, which is an example of an ENZ material, are analyzed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Optical Coatings and Gratings · Advanced Antenna and Metasurface Technologies · Optical Polarization and Ellipsometry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (55)
Show source-provided references
1. Spectral selectivity in infrared thermal detection10.1038/lsa.2012.24 ↗
2. Photodetection with active optical antennas10.1126/science.1203056 ↗
3. Tinb thin films as absorbers for lwir microbolometers10.1016/j.optmat.2020.110558 ↗
4. Silicon colors: spectral selective perfect light absorption in single layer silicon films on aluminum surface and its thermal tunability10.1364/OE.22.031545 ↗
5. Infrared suppression by hybrid euv multilayer—ir etalon structures10.1364/OL.36.003344 ↗
6. Multilayer mirror with enhanced spectral selectivity for the next generation extreme ultraviolet lithography10.1063/1.4837335 ↗
7. Large-area, lithography-free super absorbers and color filters at visible frequencies using ultrathin metallic films10.1021/ph500410u ↗
8. Passive radiative cooling below ambient air temperature under direct sunlight10.1038/nature13883 ↗
9. Radiative cooling: principles, progress, and potentials10.1002/advs.201500360 ↗
10. Optimization of multilayer optical films with a memetic algorithm and mixed integer programming10.1021/acsphotonics.7b01136 ↗
11. Broadband optical absorption enhancement through coherent light trapping in thin-film photovoltaic cells10.1364/OE.16.005385 ↗
12. Semiconductor thin film based metasurfaces and metamaterials for photovoltaic and photoelectrochemical water splitting applications10.1002/adom.201900028 ↗
13. Light trapping in photovoltaic devices with weak dielectric absorbers: nanostructured dielectric and metal interfaces10.1016/j.optmat.2019.01.046 ↗
14. Refractometric biosensing based on optical phase flips in sparse and short-range-ordered nanoplasmonic layers10.1038/lsa.2014.101 ↗
15. Biosensing with the singular phase of an ultrathin metal-dielectric nanophotonic cavity10.1038/s41467-018-02860-6 ↗
16. Strong absorption and selective emission from engineered metals with dielectric coatings10.1364/OE.21.009113 ↗
17. High efficiency quasi-monochromatic infrared emitter10.1063/1.4866342 ↗
18. Optical absorbers based on strong interference in ultra-thin films10.1002/lpor.201600098 ↗
19. Optical performance of a dielectric-metal-dielectric antireflective absorber structure10.1364/JOSAA.35.001450 ↗
20. Near-perfect absorption throughout the visible using ultra-thin metal films on index-near-zero substrates10.1364/OME.9.000330 ↗
21. Salisbury screen absorbers using epsilon-near-zero substrate10.1088/2053-1591/abd8a1 ↗
22. Interference-enhanced absorption of visible and near-infrared radiation in ultrathin film coatings10.1109/LPT.2021.3102149 ↗
23. Metal-insulator-metal-based plasmonic metamaterial absorbers at visible and infrared wavelengths: a review10.3390/ma11030458 ↗
24. Broadband metamaterial absorbers10.1002/adom.201800995 ↗
25. Photonic metamaterial absorbers: morphology engineering and interdisciplinary applications10.1002/adma.201903787 ↗
26. Tunable broadband terahertz absorber based on graphene metamaterials and vo210.1016/j.optmat.2021.110915 ↗
27. Numerical study of an ultra-broadband, wide-angle, polarization-insensitive absorber in visible and infrared region10.1016/j.optmat.2021.110902 ↗
28. An optically transparent broadband metamaterial absorber for radar-infrared bi-stealth10.1016/j.optmat.2020.110793 ↗
29. Ultraviolet to near infrared titanium nitride broadband plasmonic absorber10.1016/j.optmat.2019.109377 ↗
30. A black body absorber from vertically aligned single-walled carbon nanotubes10.1073/pnas.0900155106 ↗
31. Silicon nanowire-based solar cells10.1088/0957-4484/19/29/295203 ↗
32. Tailoring nanoparticles composites derived from metal-organic framework as electromagnetic wave absorber
33. Review of plasmonic nanocomposite metamaterial absorber10.3390/ma7021221 ↗
34. Multilayer porous silicon as visible radiation absorber
35. Reflection and absorption of decimeter-waves by plane dielectric layers
36. Knott · 2004 · 297
37. Saville · 2005
38. Thin perfect absorbers for electromagnetic waves: theory, design, and realizations10.1103/PhysRevApplied.3.037001 ↗
39. Thin absorbers: operational principles and various realizations10.1109/MEMC.0.7543953 ↗
40. Nanometre optical coatings based on strong interference effects in highly absorbing media10.1038/nmat3443 ↗
41. Condition for unity absorption in an ultrathin and highly lossy film in a gires–tournois interferometer configuration10.1364/OL.40.001960 ↗
42. Omnidirectional near-unity absorption in an ultrathin planar semiconductor layer on a metal substrate10.1021/ph500093d ↗
43. Tunable short-to mid-infrared perfectly absorbing thin films utilizing conductive zinc oxide on metal10.1364/OME.5.001898 ↗
44. Admittance matching analysis of perfect absorption in unpatterned thin films10.1016/j.optcom.2014.07.004 ↗
45. Vasicek · 1960
46. Ultrathin planar cavity metasurfaces
47. Ultrathin planar broadband absorber through effective medium design10.1007/s12274-016-1122-x ↗
48. A large scale perfect absorber and optical switch based on phase change material (ge 2 sb 2 te 5) thin film10.1007/s40843-016-0129-7 ↗
49. Zeroth order fabry–perot resonance enabled strong light absorption in ultrathin silicon films on different metals and its application for color filters10.1109/JPHOT.2016.2609143 ↗
50. Near-ir imaging based on hot carrier generation in nanometer-scale optical coatings10.1021/acsphotonics.7b01021 ↗
51. Lithography-free, omnidirectional, cmos-compatible alcu alloys for thin-film superabsorbers
52. Dressel · 2002
53. Field-effect tunable and broadband epsilon-near-zero perfect absorbers with deep subwavelength thickness10.1021/acsphotonics.7b01373 ↗
54. Algorithm for the determination of intrinsic optical constants of metal films: application to aluminum10.1364/AO.34.004755 ↗
55. Yeh · 2006