Active Thermal Extraction of Near-field Thermal Radiation
- Creators
- Ding, D.
- Kim, T.
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Minnich, A. J.
Abstract
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. Our study demonstrates an approach to manipulate thermal radiation that could find applications in thermal management.
Additional Information
© 2016 American Physical Society. Received 2 April 2015; revised manuscript received 13 January 2016; published 2 February 2016. This work is part of the "Light-Material Interactions in Energy Conversion" Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences under Award No. DE-SC0001293. D.D. gratefully acknowledges the support by the Agency for Science, Technology and Research (Singapore). T.K. acknowledges the support by the Jeongsong Cultural Foundation (South Korea). A.J.M. acknowledges the support of the Northrop Grumman Corporation.Attached Files
Published - PhysRevB.93.081402.pdf
Submitted - 1504.01851v1.pdf
Supplemental Material - Supplement_v7.pdf
Files
Additional details
- Eprint ID
- 56991
- Resolver ID
- CaltechAUTHORS:20150427-085451201
- Department of Energy (DOE)
- DE-SC0001293
- Agency for Science, Technology and Research (A*STAR)
- Jeongsong Cultural Foundation
- Northrop Grumman Corporation
- Created
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2015-04-27Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field