Active thermal extraction of near-field thermal radiation
- California Inst. of Technology (CalTech), Pasadena, CA (United States)
Radiative heat transport between materials supporting surface-phonon polaritons is greatly enhanced when the materials are placed at subwavelength separation as a result of the contribution of near-field surface modes. However, the enhancement is limited to small separations due to the evanescent decay of the surface waves. In this work, we propose and numerically demonstrate an active scheme to extract these modes to the far field. Our approach exploits the monochromatic nature of near-field thermal radiation to drive a transition in a laser gain medium, which, when coupled with external optical pumping, allows the resonant surface mode to be emitted into the far field. Finally, our study demonstrates an approach to manipulate thermal radiation that could find applications in thermal management.
- 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)
- Grant/Contract Number:
- SC0001293
- OSTI ID:
- 1387856
- Alternate ID(s):
- OSTI ID: 1236726
- Journal Information:
- Physical Review B, Vol. 93, Issue 8; 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
Near-field refrigeration and tunable heat exchange through four-wave mixing
|
journal | May 2018 |
Near-field refrigeration and tunable heat exchange through four-wave mixing | text | January 2017 |
Similar Records
Near-field thermal radiation between homogeneous dual uniaxial electromagnetic metamaterials
Transition from near-field thermal radiation to phonon heat conduction at sub-manometre gaps