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Dynamically manipulating long-wave infrared polarized thermal radiation by a vanadium dioxide metasurface
Ist Teil von
Optics letters, 2024-05, Vol.49 (9), p.2485-2488
Ort / Verlag
United States: Optical Society of America
Erscheinungsjahr
2024
Link zum Volltext
Quelle
Optica Publishing Group Journals
Beschreibungen/Notizen
Dynamically manipulating the spectra and polarization properties of thermal radiation is the key to counter an infrared polarization imaging system (IPIS) under the different background environments. In this Letter, we propose a phase-change metasurface thermal emitter (PCMTE) composed of vanadium dioxide (VO
) dipole antenna arrays to dynamically manipulate polarized radiation spectra in the long-wave infrared (LWIR) region of 8-14 µm. During the thermally induced and reversible insulator-to-metal transition (IMT) in VO
, by simulating the LWIR images at different polarization angles for the PCMTE and background plates, the PCMTE can realize dynamically tunable LWIR camouflage; then, their degree of linear polarization (DoLP) can be calculated, which can demonstrate that the PCMTE can also achieve dynamically tunable LWIR polarization camouflage at the specific radiation angles and backgrounds. Our proposed PCMTE provides an effective scheme for adaptive IR polarization camouflage.