Harnessing structural darkness in the visible and infrared wavelengths for a new source of light
KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
Chemical Science Program
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Electrical Engineering Program
Advanced Membranes and Porous Materials Research Center
KAUST Solar Center (KSC)
Applied Mathematics and Computational Science Program
Permanent link to this recordhttp://hdl.handle.net/10754/621595
MetadataShow full item record
AbstractEngineering 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. © 2016 Macmillan Publishers Limited. All rights reserved.
CitationHuang J, Liu C, Zhu Y, Masala S, Alarousu E, et al. (2015) Harnessing structural darkness in the visible and infrared wavelengths for a new source of light. Nature Nanotechnology 11: 60–66. Available: http://dx.doi.org/10.1038/nnano.2015.228.
SponsorsThis 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.
CollectionsArticles; Advanced Membranes and Porous Materials Research Center; Applied Mathematics and Computational Science Program; Physical Sciences and Engineering (PSE) Division; Electrical Engineering Program; Chemical Science Program; KAUST Solar Center (KSC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
- Optically Graded Ultra Dark Absorber for Visible and Near-infrared Wavelength Range.
- Authors: Agnihotri PK, Ghai V, Singh H
- Issue date: 2018 Aug 17
- Broadband polarization-independent resonant light absorption using ultrathin plasmonic super absorbers.
- Authors: Aydin K, Ferry VE, Briggs RM, Atwater HA
- Issue date: 2011 Nov 1
- Broadband near-infrared metamaterial absorbers utilizing highly lossy metals.
- Authors: Ding F, Dai J, Chen Y, Zhu J, Jin Y, Bozhevolnyi SI
- Issue date: 2016 Dec 21
- Polarization-insensitive, ultra-broadband, and compact metamaterial-inspired optical absorber via wide-angle and highly efficient performances.
- Authors: Mehrabi M, Rajabalipanah H, Abdolali A, Tayarani M
- Issue date: 2018 May 10
- Omnidirectional, broadband light absorption using large-area, ultrathin lossy metallic film coatings.
- Authors: Li Z, Palacios E, Butun S, Kocer H, Aydin K
- Issue date: 2015 Oct 9