Focused thermal emission from a nanostructured SiC surface
- Stanford Univ., CA (United States); Univ. of Texas, Austin, TX (United States)
- Univ. of Texas, Austin, TX (United States)
- Stanford Univ., CA (United States)
Incandescent sources that produce light from electrically heated filaments or films tend to feature low efficiencies and offer poor spectral and angular control. We demonstrate that a judicious nanostructuring of a SiC surface can focus thermal emission of a preselected spectral range to a well-defined height above the surface. SiC is known to support electromagnetic surface waves that afford the required thermal emission control. Here, we provide general design rules for this type of focusing element that can be extended to other material systems, such as metals supporting surface plasmon-polariton waves. These rules are verified using full-wave calculations of the spatial variation of thermal emission. Finally, the obtained results establish a foundation for developing more complex algorithms for the design of complex thermal lenses.
- Research Organization:
- Energy Frontier Research Centers (EFRC) (United States). Light-Material Interactions in Energy Conversion (LMI)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); US Department of the Navy, Office of Naval Research (ONR)
- Grant/Contract Number:
- SC0001293; N00014-15-1-2685
- OSTI ID:
- 1388289
- Alternate ID(s):
- OSTI ID: 1326252
- Journal Information:
- Physical Review B, Vol. 94, Issue 9; Related Information: LMI partners with California Institute of Technology (lead); Harvard University; University of Illinois, Urbana-Champaign; Lawrence Berkeley National Laboratory; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Nanophotonic engineering of far-field thermal emitters
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journal | May 2019 |
Radiative metasurface for thermal camouflage, illusion and messaging
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journal | January 2020 |
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