Abstract

We demonstrate that multi-band coherent perfect absorption can be achieved at infrared frequencies by a metasurface in which four-sized columnar metal patches are separated by a dielectric layer in a unit cell. The absorption bandwidth is enhanced by three times compared with single-band absorption while high absorbance is maintained. The coherent perfect absorption is polarization-independent and can be independently modulated at each resonant frequency by tuning the phase difference of two coherent incident beams. Moreover, the resonant frequency is sensitive to the radius of the columnar patch, and thus a wide coherent perfect absorption frequency range can be obtained by adjusting the radius. Through optimizing the structural parameters, nearly perfect absorption at oblique incidence for both TE and TM polarizations are achieved. The optimized metasurface can be used as a beamsplitter at oblique incidence.

© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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2018 (1)

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
[Crossref]

2017 (1)

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

2016 (5)

A. Kohiyama, M. Shimizu, and H. Yugami, “Unidirectional radiative heat transfer with a spectrally selective planar absorber/emitter for high-efficiency solar thermophotovoltaic systems,” Appl. Phys. Express 9(11), 112302 (2016).
[Crossref]

A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

W. Zhu, F. Xiao, M. Kang, and M. Premaratne, “Coherent perfect absorption in an all-dielectric metasurface,” Appl. Phys. Lett. 108(12), 139 (2016).
[Crossref]

J. Linder and K. Halterman, “Graphene-based extremely wide-angle tunable metamaterial absorber,” Sci. Rep. 6(1), 31225 (2016).
[Crossref] [PubMed]

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
[Crossref] [PubMed]

2015 (2)

X. Luo, “Principles of electromagnetic waves in metasurfaces,” Sci China. 58(9), 594201 (2015).

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

2014 (8)

M. Kang, Y. Chong, H. Wang, W. Zhu, and M. Premaratne, “Critical route for coherent perfect absorption in a Fano resonance plasmonic system,” Appl. Phys. Lett. 105(13), 131103 (2014).
[Crossref]

X. Fang, M. Tseng, J. Ou, K. MacDonald, D. P. Tsai, and N. Zheludev, “Ultrafast all-optical switching via coherent modulation of metamaterial absorption,” Appl. Phys. Lett. 104(14), 3 (2014).
[Crossref]

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
[Crossref] [PubMed]

S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

G. Nie, Q. Shi, Z. Zhu, and J. Shi, “Selective coherent perfect absorption in metamaterials,” Appl. Phys. Lett. 105(20), 201909 (2014).
[Crossref]

K. Halterman and J. M. Elson, “Near-perfect absorption in epsilon-near-zero structures with hyperbolic dispersion,” Opt. Express 22(6), 7337–7348 (2014).
[Crossref] [PubMed]

J. Zhang, C. Guo, K. Liu, Z. Zhu, W. Ye, X. Yuan, and S. Qin, “Coherent perfect absorption and transparency in a nanostructured graphene film,” Opt. Express 22(10), 12524–12532 (2014).
[Crossref] [PubMed]

R. Feng, J. Qiu, L. Liu, W. Ding, and L. Chen, “Parallel LC circuit model for multi-band absorption and preliminary design of radiative cooling,” Opt. Express 22(S7Suppl 7), A1713–A1724 (2014).
[Crossref] [PubMed]

2013 (5)

2012 (7)

C. M. Watts, X. Liu, and W. J. Padilla, “Metamaterial electromagnetic wave absorbers,” Adv. Mater. 24(23), OP98 (2012).
[PubMed]

M. Pu, Q. Feng, C. Hu, and X. Luo, “Perfect absorption of light by coherently induced plasmon hybridization in ultrathin metamaterial film,” Plasmonics 7(4), 733–738 (2012).
[Crossref]

J. Zhang, K. F. Macdonald, and N. I. Zheludev, “Controlling light-with-light without nonlinearity,” Light Sci. Appl. 1(7), e18 (2012).
[Crossref]

H. Noh, Y. Chong, A. D. Stone, and H. Cao, “Perfect coupling of light to surface plasmons by coherent absorption,” Phys. Rev. Lett. 108(18), 186805 (2012).
[Crossref] [PubMed]

S. Dutta-Gupta, O. J. Martin, S. D. Gupta, and G. S. Agarwal, “Controllable coherent perfect absorption in a composite film,” Opt. Express 20(2), 1330–1336 (2012).
[Crossref] [PubMed]

M. Pu, Q. Feng, M. Wang, C. Hu, C. Huang, X. Ma, Z. Zhao, C. Wang, and X. Luo, “Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination,” Opt. Express 20(3), 2246–2254 (2012).
[Crossref] [PubMed]

Q. Feng, M. Pu, C. Hu, and X. Luo, “Engineering the dispersion of metamaterial surface for broadband infrared absorption,” Opt. Lett. 37(11), 2133–2135 (2012).
[Crossref] [PubMed]

2011 (5)

M. Pu, C. Hu, M. Wang, C. Huang, Z. Zhao, C. Wang, Q. Feng, and X. Luo, “Design principles for infrared wide-angle perfect absorber based on plasmonic structure,” Opt. Express 19(18), 17413–17420 (2011).
[Crossref] [PubMed]

N. Yu, P. Genevet, M. A. Kats, F. Aieta, J. P. Tetienne, F. Capasso, and Z. Gaburro, “Light propagation with phase discontinuities: generalized laws of reflection and refraction,” Science 334(6054), 333–337 (2011).
[Crossref] [PubMed]

W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
[Crossref] [PubMed]

V. V. Truong and B. de Dormale, “Optical absorption in overcoats of nanoparticle arrays on a metallic substrate,” Plasmonics 6(2), 195–200 (2011).
[Crossref]

C. Wu, A. B. Khanikaev, and G. Shvets, “Broadband slow light metamaterial based on a double-continuum fano resonance,” Phys. Rev. Lett. 106(10), 107403 (2011).
[Crossref] [PubMed]

2010 (3)

Y. D. Chong, L. Ge, H. Cao, and A. D. Stone, “Coherent perfect absorbers: time-reversed lasers,” Phys. Rev. Lett. 105(5), 053901 (2010).
[Crossref] [PubMed]

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, “Infrared perfect absorber and its application as plasmonic sensor,” Nano Lett. 10(7), 2342–2348 (2010).
[Crossref] [PubMed]

Y. Todorov, L. Tosetto, J. Teissier, A. M. Andrews, P. Klang, R. Colombelli, I. Sagnes, G. Strasser, and C. Sirtori, “Optical properties of metal-dielectric-metal microcavities in the THz frequency range,” Opt. Express 18(13), 13886–13907 (2010).
[Crossref] [PubMed]

2009 (1)

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

2008 (5)

M. Diem, T. Koschny, and C. M. Soukoulis, “Wide-angle perfect absorber/thermal emitter in the terahertz regime,” Phys. Rev. B 9(3), 3101 (2008).

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, “Perfect metamaterial absorber,” Phys. Rev. Lett. 100(20), 207402 (2008).
[Crossref] [PubMed]

T. V. Teperik, F. J. Abajo, A. G. Borisov, Y. Sugawara, J. J. Baumberg, M. Abdelsalam, and P. N. Bartlett, “Omnidirectional absorption in nanostructured metal surfaces,” Nat. Photonics 2(5), 299–301 (2008).
[Crossref]

C. Wu, Y. Avitzour, and G. Shvets, “Ultra-thin wide-angle perfect absorber for infrared frequencies,” Proc. SPIE 7029, 70290W (2008).
[Crossref]

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

2006 (2)

T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
[Crossref]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
[Crossref] [PubMed]

2003 (1)

H. Bosman, Y. Y. Lau, and R. M. Gilgenbach, “Microwave absorption on a thin film,” Appl. Phys. Lett. 82(9), 1353–1355 (2003).
[Crossref]

2001 (1)

R. A. Shelby, D. R. Smith, and S. Schultz, “Experimental verification of a negative index of refraction,” Science 292(5514), 77–79 (2001).
[Crossref] [PubMed]

Abajo, F. J.

T. V. Teperik, F. J. Abajo, A. G. Borisov, Y. Sugawara, J. J. Baumberg, M. Abdelsalam, and P. N. Bartlett, “Omnidirectional absorption in nanostructured metal surfaces,” Nat. Photonics 2(5), 299–301 (2008).
[Crossref]

Abdelsalam, M.

T. V. Teperik, F. J. Abajo, A. G. Borisov, Y. Sugawara, J. J. Baumberg, M. Abdelsalam, and P. N. Bartlett, “Omnidirectional absorption in nanostructured metal surfaces,” Nat. Photonics 2(5), 299–301 (2008).
[Crossref]

Abdelsalam, M. E.

T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
[Crossref]

Adam, A. J.

Agarwal, G. S.

Ai, Y.

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

Aieta, F.

N. Yu, P. Genevet, M. A. Kats, F. Aieta, J. P. Tetienne, F. Capasso, and Z. Gaburro, “Light propagation with phase discontinuities: generalized laws of reflection and refraction,” Science 334(6054), 333–337 (2011).
[Crossref] [PubMed]

Allen, J. W.

A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

Allen, M. S.

A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

Andrews, A. M.

Anwar, S.

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
[Crossref] [PubMed]

S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

Averitt, R. D.

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

Avitzour, Y.

C. Wu, Y. Avitzour, and G. Shvets, “Ultra-thin wide-angle perfect absorber for infrared frequencies,” Proc. SPIE 7029, 70290W (2008).
[Crossref]

Bade, K.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

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Chen, L.

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
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H. Noh, Y. Chong, A. D. Stone, and H. Cao, “Perfect coupling of light to surface plasmons by coherent absorption,” Phys. Rev. Lett. 108(18), 186805 (2012).
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W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
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Y. D. Chong, L. Ge, H. Cao, and A. D. Stone, “Coherent perfect absorbers: time-reversed lasers,” Phys. Rev. Lett. 105(5), 053901 (2010).
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Dutta-Gupta, S.

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J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
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W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
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N. Yu, P. Genevet, M. A. Kats, F. Aieta, J. P. Tetienne, F. Capasso, and Z. Gaburro, “Light propagation with phase discontinuities: generalized laws of reflection and refraction,” Science 334(6054), 333–337 (2011).
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N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, “Infrared perfect absorber and its application as plasmonic sensor,” Nano Lett. 10(7), 2342–2348 (2010).
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Hang, Z. H.

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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Huang, C.

Huang, Y.

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
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T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
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S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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Li, S.

S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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Li, X.

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
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X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
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X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
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J. Linder and K. Halterman, “Graphene-based extremely wide-angle tunable metamaterial absorber,” Sci. Rep. 6(1), 31225 (2016).
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Liu, K.

Liu, L.

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N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, “Infrared perfect absorber and its application as plasmonic sensor,” Nano Lett. 10(7), 2342–2348 (2010).
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S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
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C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
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Luo, X.

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
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A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

Mahajan, S.

T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
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Martin, O. J.

Martín Moreno, L.

G. Pirruccio, L. Martín Moreno, G. Lozano, and J. Gómez Rivas, “Coherent and Broadband Enhanced Optical Absorption in Graphene,” ACS Nano 7(6), 4810–4817 (2013).
[Crossref] [PubMed]

Mesch, M.

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, “Infrared perfect absorber and its application as plasmonic sensor,” Nano Lett. 10(7), 2342–2348 (2010).
[Crossref] [PubMed]

Mock, J. J.

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, “Perfect metamaterial absorber,” Phys. Rev. Lett. 100(20), 207402 (2008).
[Crossref] [PubMed]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
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Nie, G.

G. Nie, Q. Shi, Z. Zhu, and J. Shi, “Selective coherent perfect absorption in metamaterials,” Appl. Phys. Lett. 105(20), 201909 (2014).
[Crossref]

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H. Noh, S. M. Popoff, and H. Cao, “Broadband subwavelength focusing of light using a passive sink,” Opt. Express 21(15), 17435–17446 (2013).
[Crossref] [PubMed]

H. Noh, Y. Chong, A. D. Stone, and H. Cao, “Perfect coupling of light to surface plasmons by coherent absorption,” Phys. Rev. Lett. 108(18), 186805 (2012).
[Crossref] [PubMed]

W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
[Crossref] [PubMed]

Ou, J.

X. Fang, M. Tseng, J. Ou, K. MacDonald, D. P. Tsai, and N. Zheludev, “Ultrafast all-optical switching via coherent modulation of metamaterial absorption,” Appl. Phys. Lett. 104(14), 3 (2014).
[Crossref]

Ouyang, Z.

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

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C. M. Watts, X. Liu, and W. J. Padilla, “Metamaterial electromagnetic wave absorbers,” Adv. Mater. 24(23), OP98 (2012).
[PubMed]

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, “Perfect metamaterial absorber,” Phys. Rev. Lett. 100(20), 207402 (2008).
[Crossref] [PubMed]

Pendry, J. B.

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
[Crossref] [PubMed]

Pilon, D.

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

Pirruccio, G.

G. Pirruccio, L. Martín Moreno, G. Lozano, and J. Gómez Rivas, “Coherent and Broadband Enhanced Optical Absorption in Graphene,” ACS Nano 7(6), 4810–4817 (2013).
[Crossref] [PubMed]

Planken, P. C.

Popoff, S. M.

Premaratne, M.

W. Zhu, F. Xiao, M. Kang, and M. Premaratne, “Coherent perfect absorption in an all-dielectric metasurface,” Appl. Phys. Lett. 108(12), 139 (2016).
[Crossref]

M. Kang, Y. Chong, H. Wang, W. Zhu, and M. Premaratne, “Critical route for coherent perfect absorption in a Fano resonance plasmonic system,” Appl. Phys. Lett. 105(13), 131103 (2014).
[Crossref]

Pu, M.

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
[Crossref]

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
[Crossref] [PubMed]

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

M. Pu, Q. Feng, M. Wang, C. Hu, C. Huang, X. Ma, Z. Zhao, C. Wang, and X. Luo, “Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination,” Opt. Express 20(3), 2246–2254 (2012).
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Q. Feng, M. Pu, C. Hu, and X. Luo, “Engineering the dispersion of metamaterial surface for broadband infrared absorption,” Opt. Lett. 37(11), 2133–2135 (2012).
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M. Pu, Q. Feng, C. Hu, and X. Luo, “Perfect absorption of light by coherently induced plasmon hybridization in ultrathin metamaterial film,” Plasmonics 7(4), 733–738 (2012).
[Crossref]

M. Pu, C. Hu, M. Wang, C. Huang, Z. Zhao, C. Wang, Q. Feng, and X. Luo, “Design principles for infrared wide-angle perfect absorber based on plasmonic structure,” Opt. Express 19(18), 17413–17420 (2011).
[Crossref] [PubMed]

Qin, F.

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

Qin, S.

Qiu, J.

Ramakrishnan, G.

Ramanandan, G. K.

Ren, H.

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
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Rill, M. S.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

Russell, A. E.

T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
[Crossref]

Sagnes, I.

Saile, V.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

Sajuyigbe, S.

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, “Perfect metamaterial absorber,” Phys. Rev. Lett. 100(20), 207402 (2008).
[Crossref] [PubMed]

Schultz, S.

R. A. Shelby, D. R. Smith, and S. Schultz, “Experimental verification of a negative index of refraction,” Science 292(5514), 77–79 (2001).
[Crossref] [PubMed]

Schurig, D.

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
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Shalaev, V. M.

A. V. Kildishev, A. Boltasseva, and V. M. Shalaev, “Planar photonics with metasurfaces,” Science 339(6125), 1232009 (2013).
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Shelby, R. A.

R. A. Shelby, D. R. Smith, and S. Schultz, “Experimental verification of a negative index of refraction,” Science 292(5514), 77–79 (2001).
[Crossref] [PubMed]

Shen, M.

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
[Crossref] [PubMed]

S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

Shi, J.

G. Nie, Q. Shi, Z. Zhu, and J. Shi, “Selective coherent perfect absorption in metamaterials,” Appl. Phys. Lett. 105(20), 201909 (2014).
[Crossref]

Shi, Q.

G. Nie, Q. Shi, Z. Zhu, and J. Shi, “Selective coherent perfect absorption in metamaterials,” Appl. Phys. Lett. 105(20), 201909 (2014).
[Crossref]

Shimizu, M.

A. Kohiyama, M. Shimizu, and H. Yugami, “Unidirectional radiative heat transfer with a spectrally selective planar absorber/emitter for high-efficiency solar thermophotovoltaic systems,” Appl. Phys. Express 9(11), 112302 (2016).
[Crossref]

Shrekenhamer, D.

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

Shvets, G.

C. Wu, A. B. Khanikaev, and G. Shvets, “Broadband slow light metamaterial based on a double-continuum fano resonance,” Phys. Rev. Lett. 106(10), 107403 (2011).
[Crossref] [PubMed]

C. Wu, Y. Avitzour, and G. Shvets, “Ultra-thin wide-angle perfect absorber for infrared frequencies,” Proc. SPIE 7029, 70290W (2008).
[Crossref]

Sirtori, C.

Smith, D. R.

N. I. Landy, S. Sajuyigbe, J. J. Mock, D. R. Smith, and W. J. Padilla, “Perfect metamaterial absorber,” Phys. Rev. Lett. 100(20), 207402 (2008).
[Crossref] [PubMed]

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
[Crossref] [PubMed]

R. A. Shelby, D. R. Smith, and S. Schultz, “Experimental verification of a negative index of refraction,” Science 292(5514), 77–79 (2001).
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Soukoulis, C. M.

M. Diem, T. Koschny, and C. M. Soukoulis, “Wide-angle perfect absorber/thermal emitter in the terahertz regime,” Phys. Rev. B 9(3), 3101 (2008).

Starr, A. F.

D. Schurig, J. J. Mock, B. J. Justice, S. A. Cummer, J. B. Pendry, A. F. Starr, and D. R. Smith, “Metamaterial electromagnetic cloak at microwave frequencies,” Science 314(5801), 977–980 (2006).
[Crossref] [PubMed]

Stone, A. D.

H. Noh, Y. Chong, A. D. Stone, and H. Cao, “Perfect coupling of light to surface plasmons by coherent absorption,” Phys. Rev. Lett. 108(18), 186805 (2012).
[Crossref] [PubMed]

W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
[Crossref] [PubMed]

Y. D. Chong, L. Ge, H. Cao, and A. D. Stone, “Coherent perfect absorbers: time-reversed lasers,” Phys. Rev. Lett. 105(5), 053901 (2010).
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Strasser, G.

Strikwerda, A. C.

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
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Sugawara, Y.

T. V. Teperik, F. J. Abajo, A. G. Borisov, Y. Sugawara, J. J. Baumberg, M. Abdelsalam, and P. N. Bartlett, “Omnidirectional absorption in nanostructured metal surfaces,” Nat. Photonics 2(5), 299–301 (2008).
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T. A. Kelf, Y. Sugawara, R. M. Cole, J. J. Baumberg, M. E. Abdelsalam, S. Cintra, S. Mahajan, A. E. Russell, and P. N. Bartlett, “Localized and delocalized plasmons in metallic nanovoids,” Phys. Rev. B 74(24), 245415 (2006).
[Crossref]

Tao, H.

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

Tao, K.

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

Teissier, J.

Teperik, T. V.

T. V. Teperik, F. J. Abajo, A. G. Borisov, Y. Sugawara, J. J. Baumberg, M. Abdelsalam, and P. N. Bartlett, “Omnidirectional absorption in nanostructured metal surfaces,” Nat. Photonics 2(5), 299–301 (2008).
[Crossref]

Tetienne, J. P.

N. Yu, P. Genevet, M. A. Kats, F. Aieta, J. P. Tetienne, F. Capasso, and Z. Gaburro, “Light propagation with phase discontinuities: generalized laws of reflection and refraction,” Science 334(6054), 333–337 (2011).
[Crossref] [PubMed]

Thiel, M.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

Todorov, Y.

Tosetto, L.

Truong, V. V.

V. V. Truong and B. de Dormale, “Optical absorption in overcoats of nanoparticle arrays on a metallic substrate,” Plasmonics 6(2), 195–200 (2011).
[Crossref]

Tsai, D. P.

X. Fang, M. Tseng, J. Ou, K. MacDonald, D. P. Tsai, and N. Zheludev, “Ultrafast all-optical switching via coherent modulation of metamaterial absorption,” Appl. Phys. Lett. 104(14), 3 (2014).
[Crossref]

Tseng, M.

X. Fang, M. Tseng, J. Ou, K. MacDonald, D. P. Tsai, and N. Zheludev, “Ultrafast all-optical switching via coherent modulation of metamaterial absorption,” Appl. Phys. Lett. 104(14), 3 (2014).
[Crossref]

von Freymann, G.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

Wan, W.

W. Wan, Y. Chong, L. Ge, H. Noh, A. D. Stone, and H. Cao, “Time-Reversed lasing and interferometric control of absorption,” Science 331(6019), 889–892 (2011).
[Crossref] [PubMed]

Wang, C.

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

S. Li, J. Luo, S. Anwar, W. Lu, Z. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “Broadband perfect absorption of ultrathin conductive films with coherent illumination: super performance of electromagnetic absorption,” AIP Adv. 91(10), 773–775 (2014).

S. Li, J. Luo, S. Anwar, S. Li, W. Lu, Z. H. Hang, Y. Lai, B. Hou, M. Shen, and C. Wang, “An equivalent realization of coherent perfect absorption under single beam illumination,” Sci. Rep. 4(1), 7369 (2014).
[Crossref] [PubMed]

M. Pu, Q. Feng, M. Wang, C. Hu, C. Huang, X. Ma, Z. Zhao, C. Wang, and X. Luo, “Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination,” Opt. Express 20(3), 2246–2254 (2012).
[Crossref] [PubMed]

M. Pu, C. Hu, M. Wang, C. Huang, Z. Zhao, C. Wang, Q. Feng, and X. Luo, “Design principles for infrared wide-angle perfect absorber based on plasmonic structure,” Opt. Express 19(18), 17413–17420 (2011).
[Crossref] [PubMed]

Wang, H.

M. Kang, Y. Chong, H. Wang, W. Zhu, and M. Premaratne, “Critical route for coherent perfect absorption in a Fano resonance plasmonic system,” Appl. Phys. Lett. 105(13), 131103 (2014).
[Crossref]

Wang, M.

Wang, Q.

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

Wang, Y.

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
[Crossref] [PubMed]

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

Watts, C. M.

C. M. Watts, X. Liu, and W. J. Padilla, “Metamaterial electromagnetic wave absorbers,” Adv. Mater. 24(23), OP98 (2012).
[PubMed]

Wegener, M.

J. K. Gansel, M. Thiel, M. S. Rill, M. Decker, K. Bade, V. Saile, G. von Freymann, S. Linden, and M. Wegener, “Gold helix photonic metamaterial as broadband circular polarizer,” Science 325(5947), 1513–1515 (2009).
[Crossref] [PubMed]

Weiss, T.

N. Liu, M. Mesch, T. Weiss, M. Hentschel, and H. Giessen, “Infrared perfect absorber and its application as plasmonic sensor,” Nano Lett. 10(7), 2342–2348 (2010).
[Crossref] [PubMed]

Wenner, B. R.

A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

Wu, C.

C. Wu, A. B. Khanikaev, and G. Shvets, “Broadband slow light metamaterial based on a double-continuum fano resonance,” Phys. Rev. Lett. 106(10), 107403 (2011).
[Crossref] [PubMed]

C. Wu, Y. Avitzour, and G. Shvets, “Ultra-thin wide-angle perfect absorber for infrared frequencies,” Proc. SPIE 7029, 70290W (2008).
[Crossref]

Xiao, D.

D. Xiao, K. Tao, Q. Wang, Y. Ai, and Z. Ouyang, “Metasurface for multi-wavelength coherent perfect absorption,” IEEE Photonics J. 9(1), 6800108 (2017).
[Crossref]

Xiao, F.

W. Zhu, F. Xiao, M. Kang, and M. Premaratne, “Coherent perfect absorption in an all-dielectric metasurface,” Appl. Phys. Lett. 108(12), 139 (2016).
[Crossref]

Xu, M.

Yan, C.

C. Yan, M. Pu, J. Luo, Y. Huang, X. Li, X. Ma, and X. Luo, “Coherent perfect absorption of electromagnetic wave in subwavelength structures,” Opt. Laser Technol. 101, 499–506 (2018).
[Crossref]

Yang, J.

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

Ye, W.

Yoon, J. W.

A. L. Fannin, J. W. Yoon, B. R. Wenner, J. W. Allen, M. S. Allen, and R. Magnusson, “Experimental evidence for coherent perfect absorption in guided-mode resonant silicon films,” IEEE Photonics J. 8(3), 6802307 (2016).
[Crossref]

Yu, N.

N. Yu, P. Genevet, M. A. Kats, F. Aieta, J. P. Tetienne, F. Capasso, and Z. Gaburro, “Light propagation with phase discontinuities: generalized laws of reflection and refraction,” Science 334(6054), 333–337 (2011).
[Crossref] [PubMed]

Yuan, X.

Yugami, H.

A. Kohiyama, M. Shimizu, and H. Yugami, “Unidirectional radiative heat transfer with a spectrally selective planar absorber/emitter for high-efficiency solar thermophotovoltaic systems,” Appl. Phys. Express 9(11), 112302 (2016).
[Crossref]

Zhang, J.

Zhang, X.

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
[Crossref] [PubMed]

H. Tao, C. M. Bingham, A. C. Strikwerda, D. Pilon, D. Shrekenhamer, N. I. Landy, K. Fan, X. Zhang, W. J. Padilla, and R. D. Averitt, “Highly flexible wide angle of incidence terahertz metamaterial absorber: Design, fabrication, and characterization,” Phys. Rev. B 78(24), 241103 (2008).
[Crossref]

Zhao, Z.

X. Li, L. Chen, Y. Li, X. Zhang, M. Pu, Z. Zhao, X. Ma, Y. Wang, M. Hong, and X. Luo, “Multicolor 3D meta-holography by broadband plasmonic modulation,” Sci. Adv. 2(11), e1601102 (2016).
[Crossref] [PubMed]

M. Pu, X. Li, X. Ma, Y. Wang, Z. Zhao, C. Wang, C. Hu, P. Gao, C. Huang, H. Ren, X. Li, F. Qin, J. Yang, M. Gu, M. Hong, and X. Luo, “Catenary optics for achromatic generation of perfect optical angular momentum,” Sci. Adv. 1(9), e1500396 (2015).
[Crossref] [PubMed]

M. Pu, Q. Feng, M. Wang, C. Hu, C. Huang, X. Ma, Z. Zhao, C. Wang, and X. Luo, “Ultrathin broadband nearly perfect absorber with symmetrical coherent illumination,” Opt. Express 20(3), 2246–2254 (2012).
[Crossref] [PubMed]

M. Pu, C. Hu, M. Wang, C. Huang, Z. Zhao, C. Wang, Q. Feng, and X. Luo, “Design principles for infrared wide-angle perfect absorber based on plasmonic structure,” Opt. Express 19(18), 17413–17420 (2011).
[Crossref] [PubMed]

Zheludev, N.

X. Fang, M. Tseng, J. Ou, K. MacDonald, D. P. Tsai, and N. Zheludev, “Ultrafast all-optical switching via coherent modulation of metamaterial absorption,” Appl. Phys. Lett. 104(14), 3 (2014).
[Crossref]

Zheludev, N. I.

J. Zhang, K. F. Macdonald, and N. I. Zheludev, “Controlling light-with-light without nonlinearity,” Light Sci. Appl. 1(7), e18 (2012).
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Appl. Phys. Express (1)

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Figures (10)

Fig. 1
Fig. 1 Schematic of the metasurface which is illuminated by two counter-propagating coherent beams along ±z. View of the unit cell where two patterned gold films with thicknessdare separated by a Al2O3 dielectric spacer with thicknessh. Geometrical parameters are the periodpin both x and y-directions, the radius of four column patches r 1 , r 2 , r 3 , r 4 .
Fig. 2
Fig. 2 (a) Coherent absorption spectra for a metasurface in which the column patches have the same radius in a unti cell r 1 = r 2 = r 3 = r 4 =r=0.34μm, where the inset depicts the schematic of the proposed subunits. (b) Amplitudes of transmission (Red dotted line) and reflection coefficients (Blue solid line) for a single beam incident normally upon the metasurface. (c) The corresponding phases of transmission and reflection coefficients. (d) Coherent absorption spectra withrvarying from 0.3 to 0.38µm, where arrows indicate the direction of spectral movement.
Fig. 3
Fig. 3 Simulated coherent absorption spectra of proposed multi-band metasurface in which the number of columns is different in a unit cell. (a) A column with radius r 1 ; (b) Two columns with radius r 1 , r 2 ; (c) Three columns with radius r 1 , r 2 , r 3 ; (d) Four columns with radius r 1 , r 2 , r 3 , r 4 . The four peaks CPA occurs at four frequencies for f 1 =90THz, f 2 =96.9THz, f 3 =104.7THz, f 4 =114.6THzwith absorption rates of 99.34%, 95.46%, 95.06%, 98.83%, respectively. The bottom four figures are the magnetic field distribution in the center of the dielectric layer at each resonant frequency in which the (e) f 1 =90THz; (f) f 2 =96.9THz; (g) f 3 =104.7THz; (h) f 4 =114.6THz.
Fig. 4
Fig. 4 (a) A broadband coherent absorption spectra (Black solid line) when the optimized parameters are r 1 =0.37μm, r 2 =0.33μm, r 3 =0.34μm, r 4 =0.36μm,h=185nmand a single-band coherent absorption spectra (Red dotted line) with r=0.34μm,h=115nm. (b) Dependence of the absorption spectra on the polarization angles at normal incidence.
Fig. 5
Fig. 5 (a) Coherent absorption of the metasurface as a function of frequency and phase difference, the black and brown dotted lines refer to the absorption at the frequencies of 106.5THz and 112.8THz, respectively. (b) Phase modulation of absorption at f=106.5THz (Black dotted line) and f=112.8THz(Brown dotted line).
Fig. 6
Fig. 6 (a) Coherent absorption of the metasurface as a function of frequency and the thickness of dielectric layer. (b) Absorption spectra for different dielectric constants of the dielectric layer.
Fig. 7
Fig. 7 Coherent absorption of the metasurface as a function of frequency and incidence angle for (a) TE polarization, and (b) TM polarization. (c) TE polarization and (d) TM polarization wave incident on the metasurface in x-zplane with an incident angle of θ to z-direction.
Fig. 8
Fig. 8 Optical path diagram of two coherent beams incident on the metasurface. (a) Normal incidence and (b) Oblique incidence. Pin1 and Pin2 refer to the input beams, Pout1 and Pout2 represent output beams.
Fig. 9
Fig. 9 Coherent absorption for TE (a)(c) and TM polarization (b)(d) when the incidence angle is 45°. The optimized parameters are r 1 =0.38μm, r 2 =0.35μm, r 3 =0.36μm, r 4 =0.37μmfor (a)(b), r 1 =0.37μm, r 2 =0.34μm, r 3 =0.35μm, r 4 =0.36μmfor (c)(d). The black solid line represents the optimized result while the red dotted line represents the unoptimized result in each graph.
Fig. 10
Fig. 10 (a) Coherent absorption of the metasurface as a function of frequency and incidence angle for TM polarization in a wide range of frequencies. (b) The modulation of the point source. The black dotted arrows indicate the absorbed light while the red solid arrows indicate the reserved light.

Tables (1)

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Table 1 The Calculated Maximum and Minimum Absorption Rate and Modulation Depth at the Two Peak Frequencies

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