Different types of sources

Nanophotonics devices for thermal emission

Figure 1 - Description of thermal emission as interaction between matter and radiation

Figure 2 - Quantum cascade laser

Figure 3 - Parametric generation, basic principle and cavity reinforcement

Figure 5 - Illustration of the notion of emissivity to obtain a spectrally narrow or directional source

Figure 6 - Illustration of Kirchhoff&#039;s law on the example of a reflective surface

Figure 7 - Guided mode resonances in periodic networks

Figure 8 - Localized resonances in metal nanoresonators

Figure 9 - Illustration of the principle of generalized Kirchhoff&#039;s law

Figure 10 - Diagram of Joule-heated membranes for radiative emission

Figure 11 - Directional emissivity of various types of structures

Figure 12 - Narrow-band thermal sources

Figure 13 - Broadband absorption and emission by resonator combination

Figure 14 - Real part of permittivity as a function of wave number for a metal and a semiconductor

Figure 15 - Hyperbolic material type I: positive parallel permittivity and negative perpendicular permittivity

Figure 16 - Hyperbolic material type II: negative parallel permittivity and positive perpendicular permittivity

Figure 17 - Rapid modulation of thermal emission

Figure 18 - Mid-infrared absorbance of various gases with characteristic absorption lines (source: NIST Chemistry Webbook)

Figure 19 - Manipulation of spatial, spectral and polarized thermal emission

Figure 20 - Radiative cooling using nanophotonic devices