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Tailoring thermal emission with incandescent metasurfaces

Tailoring thermal emission

Infrared thermal sources...faster than LEDs !

During the last decades, various research groups have managed to design and fabricate devices based on thermal emission providing light with controlled angular distribution, narrow band spectrum, or easily modulable at high frequencies. This is generally done by heating the integrality of the emitting device or by modulating at high speed the emissivity of the active material.

In our team, we adopted a different approach ; the incandescent emitters we chose, are really tiny : they are nano-emitters. When placed on an adequate substrate , they can cool down within tens of nanoseconds, thanks to their small thickness. However, such qmall pieces of matter cannot emit much light when heated. To compensate this rather small intrinsic emission, we design, fabricate and characterize architectures of nanodevices by following the principles of the local formulation of the Kirchhoff's law. In other words, we design structures that maxumize light absorption. This enables us reciprocally to identify structures benefiting from interesting antenna effects, potentially enhancing the total emission by several orders of magnitude.


Phd students and postdocs
Anne Nguyen

Anne Nguyen

PhD student 2022

Téléphone / Bureau : +1 33 64 53 34 53 / R2.6


Leo Wojszvzyk

Dr. Léo Wojszvzyk

 PhD Student 2019

Léo defended his thesis in 2019 and joined the DGA. His thesis title :

"Fast modulation of infrared emission by incandescent metasurfaces"


Efficiency optimization of mid-infrared incandescent sources with time-varying temperature

Authors : Anne Nguyen, Jean-Jacques Greffet


Opt. Mat. Express  12, 225 (2022)

An incandescent metasurface for quasimonochromatic polarized mid-wave infrared emission modulated beyond 10 MHz

Authors : Léo Wojszvzyk, Anne Nguyen, Anne-Lise Coutrot, Cheng Zhang, Benjamin Vest  jean-Jacques Greffet

DOI : 10.1038/s41467-021-21752-w

Nature Communications volume 12, Article number: 1492 (2021)


Enhancing thermal radiation with nanoantennas to create infrared sources with high modulation rates

Authors : Emilie Sakat, Léo Wojszvzyk, Jean-Paul Hugonin, Mondher Besbes, Christophe Sauvan, Jean-Jacques Greffet

DOI : 10.1364/OPTICA.5.000175

Optica, Optical Society of America (OSA), 2018, 5 (2), pp.175-179


Light Emission by Non-Equilibrium bodies : Local Kirchhoff Law

Authors : Jean-Jacques Greffet, Patrick Bouchon, Giovanni Brucoli, François Marquier

DOI : 10.1103/PhysRevX.8.021008

Phys. Rev. X, (2) 021008 (2018)


Light Emission by a Thermalized Ensemble of Emitters Coupled to a Resonant Structure

Authors : Léo Wojszvzyk, Hector Monin, Jean-Jacques Greffet

DOI : 10.1002/adom.201801697

Adv. Optical Mater. 2019, 1801697


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