Engineering broadband light absorbers is crucial to many applications, including energy-harvesting devices and optical interconnects. The performances of an ideal absorber are that of a black body, a dark material that absorbs radiation at all angles and polarizations. Despite advances in micrometre-thick films, the absorbers available to date are still far from an ideal black body. Here, we describe a disordered nanostructured material that shows an almost ideal black-body absorption of 98–99% between 400 and 1,400 nm that is insensitive to the angle and polarization of the incident light. The material comprises nanoparticles composed of a nanorod with a nanosphere of 30 nm diameter attached. When diluted into liquids, a small concentration of nanoparticles absorbs on average 26% more than carbon nanotubes, the darkest material available to date. By pumping a dye optical amplifier with nanosecond pulses of ∼100 mW power, we harness the structural darkness of the material and create a new type of light source, which generates monochromatic emission (∼5 nm wide) without the need for any resonance. This is achieved through the dynamics of light condensation in which all absorbed electromagnetic energy spontaneously generates single-colour energy pulses.
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Cao, A., Zhang, X., Xu, C., Wei, B. & Wu, D. Tandem structure of aligned carbon nanotubes on Au and its solar thermal absorption. Solar Energy Mater. Solar Cells 70, 481–486 (2002).
Lira-Cantú, M., Morales Sabio, A., Brustenga, A. & Gómez-Romero, P. Electrochemical deposition of black nickel solar absorber coatings on stainless steel AISI316L for thermal solar cells. Solar Energy Mater. Solar Cells 87, 685–694 (2005).
Lehman, J. et al. Very black infrared detector from vertically aligned carbon nanotubes and electric-field poling of lithium tantalate. Nano Lett. 10, 3261–3266 (2010).
Liu, N., Mesch, M., Weiss, T., Hentschel, M. & Giessen, H. Infrared perfect absorber and its application as plasmonic sensor. Nano Lett. 10, 2342–2348 (2010).
Lenert, A. et al. A nanophotonic solar thermophotovoltaic device. Nature Nanotech. 9, 126–130 (2014).
Teperik, T. V. et al. Omnidirectional absorption in nanostructured metal surfaces. Nature Photon. 2, 299–301 (2008).
Aydin, K., Ferry, V. E., Briggs, R. M. & Atwater, H. A. Broadband polarization-independent resonant light absorption using ultrathin plasmonic super absorbers. Nature Commun. 2, 517 (2011).
Cui, Y. et al. Ultrabroadband light absorption by a sawtooth anisotropic metamaterial slab. Nano Lett. 12, 1443–1447 (2012).
Kats, M. A., Blanchard, R., Genevet, P. & Capasso, F. Nanometre optical coatings based on strong interference effects in highly absorbing media. Nature Mater. 12, 20–24 (2013).
Milonni, P. W. The Quantum Vacuum (Academic, 1994).
Greffet, J.-J. et al. Coherent emission of light by thermal sources. Nature 416, 61–64 (2002).
Mann, D. et al. Electrically driven thermal light emission from individual single-walled carbon nanotubes. Nature Nanotech. 2, 33–38 (2007).
Mizuno, K. et al. A black body absorber from vertically aligned single-walled carbon nanotubes. Proc. Natl Acad. Sci. USA 106, 6044–6047 (2009).
Huang, Y.-F. et al. Improved broadband and quasi-omnidirectional anti-reflection properties with biomimetic silicon nanostructures. Nature Nanotech. 2, 770–774 (2007).
Yu, Z., Raman, A. & Fan, S. Fundamental limit of nanophotonic light trapping in solar cells. Proc. Natl Acad. Sci. USA 107, 17491–17496 (2010).
Yang, Z.-P., Ci, L., Bur, J. A., Lin, S.-Y. & Ajayan, P. M. Experimental observation of an extremely dark material made by a low-density nanotube array. Nano Lett. 8, 446–451 (2008).
Selvakumar, N., Krupanidhi, S. & Barshilia, H. C. Carbon nanotube-based tandem absorber with tunable spectral selectivity: transition from near-perfect blackbody absorber to solar selective absorber. Adv. Mater. 26, 2552–2557 (2014).
Matsumoto, T., Koizumi, T., Kawakami, Y., Okamoto, K. & Tomita, M. Perfect blackbody radiation from a graphene nanostructure with application to high-temperature spectral emissivity measurements. Opt. Express 21, 30964–30974 (2013).
Zhu, J. et al. Optical absorption enhancement in amorphous silicon nanowire and nanocone arrays. Nano Lett. 9, 279–282 (2008).
Liu, C. et al. Enhanced energy storage in chaotic optical resonators. Nature Photon. 7, 473–478 (2013).
Conti, C. et al. Condensation in disordered lasers: theory, 3D+1 simulations, and experiments. Phys. Rev. Lett. 101, 143901 (2008).
Picozzi, A. et al. Optical wave turbulence: towards a unified nonequilibrium thermodynamic formulation of statistical nonlinear optics. Phys. Rep. 542, 1–132 (2014).
Weill, R., Fischer, B. & Gat, O. Light-mode condensation in actively-mode-locked lasers. Phys. Rev. Lett. 104, 173901 (2010).
Fratalocchi, A. Mode-locked lasers: light condensation. Nature Photon. 4, 502–503 (2010).
Klaers, J., Schmitt, J., Vewinger, F. & Weitz, M. Bose–Einstein condensation of photons in an optical microcavity. Nature 468, 545–548 (2010).
Vukusic, P., Hallam, B. & Noyes, J. Brilliant whiteness in ultrathin beetle scales. Science 315, 348 (2007).
Leonhardt, U. Optical conformal mapping. Science 312, 1777–1780 (2006).
Pendry, J., Aubry, A., Smith, D. & Maier, S. Transformation optics and subwavelength control of light. Science 337, 549–552 (2012).
Noginov, M. A. et al. Demonstration of a spaser-based nanolaser. Nature 460, 1110–1112 (2009).
Verdeyen, J. T. Laser Electronics (Prentice Hall, 1995).
Conti, C. & Fratalocchi, A. Dynamic light diffusion, three-dimensional Anderson localization and lasing in inverted opals. Nature Phys. 4, 794–798 (2008).
Xia, Y., Xiong, Y., Lim, B. & Skrabalak, S. E. Shape-controlled synthesis of metal nanocrystals: simple chemistry meets complex physics? Angew. Chem. Int. Ed. 48, 60–103 (2009).
Carbone, L. & Cozzoli, P. D. Colloidal heterostructured nanocrystals: synthesis and growth mechanisms. Nano Today 5, 449–493 (2010).
Huang, J. et al. Site-specific growth of AuPd alloy horns on Au nanorods: a platform for highly sensitive monitoring of catalytic reactions by surface enhancement Raman spectroscopy. J. Am. Chem. Soc. 135, 8552–8561 (2013).
This work is part of the Kaust research programme ‘Optics and plasmonics for efficient energy harvesting’, supported by award no. CRG-1-2012-FRA-005. Y.H. acknowledges baseline support funds from Kaust.
The authors declare no competing financial interests.
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Huang, J., Liu, C., Zhu, Y. et al. Harnessing structural darkness in the visible and infrared wavelengths for a new source of light. Nature Nanotech 11, 60–66 (2016). https://doi.org/10.1038/nnano.2015.228
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