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Coherent Perfect Absorbers: Time-Reversed Lasers
Open accessAbstract
We show that an arbitrary body or aggregate can be made perfectly absorbing at discrete frequencies if a precise amount of dissipation is added under specific conditions of coherent monochromatic illumination. This effect arises from the interaction of optical absorption and wave interference and corresponds to moving a zero of the elastic S matrix onto the real wave vector axis. It is thus the time-reversed process of lasing at threshold. The effect is demonstrated in a simple Si slab geometry illuminated in the 500-900 nm range. Coherent perfect absorbers act as linear, absorptive interferometers, which may be useful as detectors, transducers, and switches.
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Cited by
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Özdemir, Ş. K., Rotter, S., Nori, F., & Yang, L. (2019) · Nature Materials · doi:10.1038/s41563-019-0304-9 · Cited by 1,773
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Kravets, V. G., Kabashin, A. V., Barnes, W. L., & Grigorenko, A. N. (2018) · Chemical Reviews · doi:10.1021/acs.chemrev.8b00243 · Cited by 1,501
Non-Hermitian photonics based on parity–time symmetry
Feng, L., El-Ganainy, R., & Ge, L. (2017) · Nature Photonics · doi:10.1038/s41566-017-0031-1 · Cited by 1,497
Self-citationPT-Symmetry Breaking and Laser-Absorber Modes in Optical Scattering Systems
Chong, Y. D., Ge, L., & Stone, A. D. (2011) · Physical Review Letters · doi:10.1103/physrevlett.106.093902 · Cited by 980
Self-citationPrinciples of electromagnetic waves in metasurfaces
Luo, X. (2015) · Science China Physics, Mechanics & Astronomy · doi:10.1007/s11433-015-5688-1 · Cited by 580
Metadata
- Authors
- Chong, Y. D., Ge, L., Cao, H., & Stone, A. D.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-07-26
- Volume
- 105
- Issue
- 5
- Pages
- 053901-053901
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2159798643
- Cited by
- 1,175
- References
- 0
- FWCI
- 16.55
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Chong, Y. D., Ge, L., Cao, H., & Stone, A. D. (2010). Coherent Perfect Absorbers: Time-Reversed Lasers. Physical Review Letters. https://doi.org/10.1103/physrevlett.105.053901
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