Review Article |
Featured
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Article |
Control of semiconductor emitter frequency by increasing polariton momenta
While modifications of emission and absorption rates are commonplace in photonics, similar manipulations of emitter transition frequencies are challenging. Here, 2D polaritons in graphene are predicted to enable non-vertical electronic transitions in a quantum well, controlling the transition frequencies by inducing an effective non-locality.
- Yaniv Kurman
- , Nicholas Rivera
- & Ido Kaminer
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Article |
Enrichment of molecular antenna triplets amplifies upconverting nanoparticle emission
Lanthanide-doped upconverting nanoparticles exhibiting a 33,000 times increase in brightness and a 100 times increase in efficiency over bare upconverting nanoparticles are demonstrated. The findings are relevant in fields from solar energy to biophotonics.
- David J. Garfield
- , Nicholas J. Borys
- & P. James Schuck
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Article |
Silicon Mie resonators for highly directional light emission from monolayer MoS2
Based on a modified Mie scattering theory, several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole in monolayer MoS2 to optical resonances of a silicon nanowire are reported.
- Ahmet Fatih Cihan
- , Alberto G. Curto
- & Mark L. Brongersma
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Article |
Opto-thermoelectric nanotweezers
Heating due to optical losses in metal nanoparticles, which is usually an unwanted side effect, is harnessed to realize low-power opto-thermoelectric nanotweezers.
- Linhan Lin
- , Mingsong Wang
- & Yuebing Zheng
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Letter |
Femtosecond X-ray Fourier holography imaging of free-flying nanoparticles
Femtosecond X-ray Fourier holography imaging with record-high lateral resolution below 20 nm is demonstrated. Phase information is encoded into the interference of the diffraction patterns of a reference particle with a measurement sample.
- Tais Gorkhover
- , Anatoli Ulmer
- & Christoph Bostedt
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Article |
Bright colloidal quantum dot light-emitting diodes enabled by efficient chlorination
Green light-emitting diodes with a brightness of 460,000 cd m–2 and a low turn-on voltage of 2.5 V are enabled by the use of a chlorination treatment to provide conductive passivation of the devices.
- Xiyan Li
- , Yong-Biao Zhao
- & Edward H. Sargent
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Letter |
Activation of the surface dark-layer to enhance upconversion in a thermal field
Phonons on the surface of lanthanide-doped upconversion materials are used to combat thermal quenching, enabling ~2,000-fold emission enhancement.
- Jiajia Zhou
- , Shihui Wen
- & Dayong Jin
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News & Views |
Optical nanoscopy turns coherent
The ability to switch fluorophores on and off is key to performing super-resolution nanoscopy. To date, all switching schemes have been based on an incoherent response to the laser field. Now, a nanoscope that uses on–off coherent switching of quantum dots has been demonstrated.
- Thomas A. Klar
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Letter |
Far-field nanoscopy on a semiconductor quantum dot via a rapid-adiabatic-passage-based switch
A spatial resolution of 30 nm (=λ/31) exceeding the diffraction limit is achieved by super-resolution fluorescence microscopy. The nanoscopic imaging scheme can be applied to coherent quantum-mechanical systems such as quantum dots, as well as colour centres.
- Timo Kaldewey
- , Andreas V. Kuhlmann
- & Richard J. Warburton
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Article |
Wavefront shaping with disorder-engineered metasurfaces
Using designer-disordered metasurfaces, optical input–output characteristics, which are typically difficult to obtain, can be known a priori. The approach is used for wavefront shaping, high-numerical-aperture focusing and fluorescence imaging.
- Mooseok Jang
- , Yu Horie
- & Changhuei Yang
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Article |
Tandem luminescent solar concentrators based on engineered quantum dots
Multijunctions have long been used to enhance photovoltaic solar cell efficiency. Here, a large-area tandem luminescent solar concentrator is demonstrated using two types of quantum dot with low reabsorption.
- Kaifeng Wu
- , Hongbo Li
- & Victor I. Klimov
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Review Article |
X-ray ptychography
This Review covers key advancements in X-ray ptychographic microscopy and tomography over the past ten years. Potential applications in the life and materials sciences, the latest concepts and future developments are also discussed.
- Franz Pfeiffer
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Article |
Active tuning of surface phonon polariton resonances via carrier photoinjection
Infrared surface phonon polariton tuning is achieved by photoinjecting free carriers into resonators.
- Adam D. Dunkelberger
- , Chase T. Ellis
- & Joshua D. Caldwell
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Letter |
Broadband gate-tunable terahertz plasmons in graphene heterostructures
An all-optical difference frequency process is exploited to generate terahertz graphene plasmons that are tunable over an octave.
- Baicheng Yao
- , Yuan Liu
- & Chee Wei Wong
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Article |
Room-temperature ultrafast nonlinear spectroscopy of a single molecule
Frequency-resolved transient excited-state absorption of a single molecule is measured at room temperature. The dynamic Stokes shift and vibrational cooling are directly measured with 25 fs temporal resolution and a spectral detection bandwidth of hundreds of meV.
- Matz Liebel
- , Costanza Toninelli
- & Niek F. van Hulst
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Review Article |
Non-reciprocal photonics based on time modulation
The progress on non-reciprocal photonic devices enabled by temporal modulation is reviewed.
- Dimitrios L. Sounas
- & Andrea Alù
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Article |
Plasmonic coupling at a metal/semiconductor interface
The role of direct plasmonic coupling in hot-electron generation at Ag/TiO2 interfaces is clarified by two-photon photoemission spectroscopy.
- Shijing Tan
- , Adam Argondizzo
- & Hrvoje Petek
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Q&A |
Industry of the future
Giorgio Anania, the vice president of Photonics21 and CEO of Aledia, a French developer of GaN microwire LEDs, discusses the impact of the Photonics Public Private Partnership on jobs and growth in Europe and the importance of investing in future industries.
- Rachel Won
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Letter |
Ultrafast synthesis and switching of light polarization in nonlinear anisotropic metamaterials
Picosecond all-optical switching of the polarization of visible light is achieved by using the anisotropy and nonlinearity of a hyperbolic metamaterial.
- Luke H. Nicholls
- , Francisco J. Rodríguez-Fortuño
- & Anatoly V. Zayats
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Letter |
Laser refrigeration, alignment and rotation of levitated Yb3+:YLF nanocrystals
A nanocryostat is realized through the refrigeration of levitated Yb3+:YLF nanocrystals to 130 K using anti-Stokes fluorescence cooling, while the laser polarization allows orientation control of the trapped nanocrystal and maximizes its cooling.
- A. T. M. Anishur Rahman
- & P. F. Barker
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Letter |
Highly efficient on-chip direct electronic–plasmonic transducers
Electronic–plasmonic transducers made from metal–insulator–metal junctions are demonstrated. The plasmon sources are coupled efficiently to plasmonic waveguides and could be used in integrated nanophotonic applications.
- Wei Du
- , Tao Wang
- & Christian A. Nijhuis
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Article |
Depolarization signatures map gold nanorods within biological tissue
An optical technique makes it possible to determine the distribution of gold nanoparticles in tissue.
- Norman Lippok
- , Martin Villiger
- & Brett E. Bouma
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Article |
Tunable room-temperature single-photon emission at telecom wavelengths from sp3 defects in carbon nanotubes
Single-photon emission with 99% purity is generated from sp3 defects in carbon nanotubes (CNTs) by optical excitation at room temperature. By increasing the CNT diameter from 0.76 nm to 0.94 nm, the emission wavelength can be changed from 1,100 nm to 1,600 nm.
- Xiaowei He
- , Nicolai F. Hartmann
- & Stephen K. Doorn
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Books & Arts |
New titles at a glance
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Letter |
Electrical 2π phase control of infrared light in a 350-nm footprint using graphene plasmons
Phase velocity of graphene plasmons is electrically controlled in a set-up enabling tuning of the phase between 0 and 2π.
- Achim Woessner
- , Yuanda Gao
- & Frank H. L. Koppens
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Letter |
Evanescent single-molecule biosensing with quantum-limited precision
An evanescent single-molecule biosensor that operates at the fundamental precision limit, allowing a four-order-of-magnitude reduction in optical intensity while maintaining state-of-the-art sensitivity, is demonstrated.
- N. P. Mauranyapin
- , L. S. Madsen
- & W. P. Bowen
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Review Article |
Time stretch and its applications
Photonic time-stretch techniques and their applications are reviewed. The approach enables the observation of signals that are otherwise too short or rapid for conventional measurement.
- Ata Mahjoubfar
- , Dmitry V. Churkin
- & Bahram Jalali
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Article |
Broadband image sensor array based on graphene–CMOS integration
Graphene–quantum dots on CMOS sensor offers broadband imaging.
- Stijn Goossens
- , Gabriele Navickaite
- & Frank Koppens
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Letter |
Nanofibre optic force transducers with sub-piconewton resolution via near-field plasmon–dielectric interactions
A nanofibre optic force transducer with 0.2 pN sensitivity is demonstrated. The set-up is used to monitor bacterial motion, observe heart cell beating and detect infrasound power in solution.
- Qian Huang
- , Joon Lee
- & Donald J. Sirbuly
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Letter |
Imaging exciton–polariton transport in MoSe2 waveguides
Imaging reveals properties of exciton–polaritons in MoSe2 waveguides.
- F. Hu
- , Y. Luan
- & Z. Fei
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Article |
Dye-sensitized solar cells for efficient power generation under ambient lighting
A dye-sensitized solar cell that has been designed for efficient operation under indoor lighting could offer a convenient means for powering the Internet of Things.
- Marina Freitag
- , Joël Teuscher
- & Anders Hagfeldt
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Letter |
Hybrid indium phosphide-on-silicon nanolaser diode
By exploiting one-dimensional photonic crystal nanocavities, an ultra-compact indium phosphide-on-silicon laser diode with low current threshold, high wall-plug efficiency and high integrability is demonstrated.
- Guillaume Crosnier
- , Dorian Sanchez
- & Fabrice Raineri
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Letter |
Integrated Cherenkov radiation emitter eliminating the electron velocity threshold
Researchers use hyperbolic metamaterials to make an integrated Cherenkov light source and relax the electron energy requirements. Radiation covering the visible range and near-infrared is achieved with electron energies of only 0.25–1.4 keV.
- Fang Liu
- , Long Xiao
- & Yidong Huang
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Article |
Single-photon imager based on a superconducting nanowire delay line
A superconducting nanowire acting as a single-photon detector and as a microwave delay line is used to demonstrate an imaging device at the single-photon level with sub-20-µm spatial resolution and 50-ps temporal resolution.
- Qing-Yuan Zhao
- , Di Zhu
- & Karl K. Berggren
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Article |
Highly efficient luminescent solar concentrators based on earth-abundant indirect-bandgap silicon quantum dots
Reabsorption losses in luminescent solar concentrators can be avoided by the use of indirect-bandgap semiconductor nanostructures. The technology has been used to demonstrate flexible luminescent solar concentrators with performance comparable to flat concentrators.
- Francesco Meinardi
- , Samantha Ehrenberg
- & Sergio Brovelli
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Letter |
Measurement of non-monotonic Casimir forces between silicon nanostructures
Previous demonstrations of the elusive Casimir force between interfaces exhibit monotonic dependence on surface displacement. Now a non-monotonic dependence of the force has been shown experimentally by exploting nanostructured surfaces.
- L. Tang
- , M. Wang
- & H. B. Chan
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Letter |
Optical determination of the Néel vector in a CuMnAs thin-film antiferromagnet
Due to their nature antiferromagnets are difficult to probe with conventional magnetometers. The Néel vector of a practically important antiferromagnet, CuMnAs, has now been determined by a femtosecond pump–probe magneto-optical experiment.
- V. Saidl
- , P. Němec
- & T. Jungwirth
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Letter |
Demonstration of a self-pulsing photonic crystal Fano laser
Fano interference and nonlinearity are exploited to achieve self-pulsing of a laser at gigahertz frequencies.
- Yi Yu
- , Weiqi Xue
- & Jesper Mork
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Letter |
Spectral hole burning and its application in microwave photonics
Rabi oscillations with a decay time of 26.7 μs are observed in a system comprising the electron spins in a diamond nitrogen–vacancy centre and a superconducting microwave cavity. Such oscillations are achieved by engineering the spectral hole burning of the spin ensemble.
- Stefan Putz
- , Andreas Angerer
- & Johannes Majer
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Article |
High-magnification super-resolution FINCH microscopy using birefringent crystal lens interferometers
The use of birefringent crystals improves super-resolution Fresnel incoherent correlation holography (FINCH) microscopy.
- Nisan Siegel
- , Vladimir Lupashin
- & Gary Brooker
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Article |
A flexible and wearable terahertz scanner
A flexible and wearable terahertz scanner based on carbon nanotubes is demonstrated at room temperature over a frequency range 0.14 THz to 39 THz. The terahertz photothermoelectricity is enhanced by using different electrode materials.
- D. Suzuki
- , S. Oda
- & Y. Kawano
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Letter |
Real-space coherent manipulation of electrons in a single tunnel junction by single-cycle terahertz electric fields
Carrier-envelope-phase-controlled single-cycle terahertz pulses can induce coherent electron tunnelling either from a Pt/Ir nanotip to a graphite sample or vice versa. The pulses enable ultrafast nonlinear manipulation of electrons at the atomic scale.
- Katsumasa Yoshioka
- , Ikufumi Katayama
- & Jun Takeda
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Article |
Optical microresonators as single-particle absorption spectrometers
Single-particle double-modulation absorption spectrometers based on whispering-gallery-mode microresonators achieve sub-100-Hz sensitivity to photothermal resonance shifts and allow for the study of arrays of Fano resonances in the context of plasmonic–photonic hybridization.
- Kevin D. Heylman
- , Niket Thakkar
- & Randall H. Goldsmith
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Article |
Selective carrier injection into patterned arrays of pyramidal quantum dots for entangled photon light-emitting diodes
Polarization-entangled photons are generated from light-emitting diodes based on site-controlled pyramidal quantum dots. Selective current injection into the vicinity of a quantum dot becomes possible owing to a self-assembled vertical quantum wire.
- T. H. Chung
- , G. Juska
- & E. Pelucchi
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Letter |
Plasmonic metamaterial absorber for broadband manipulation of mechanical resonances
Coherent mechanical oscillations are optically driven on a metamaterial absorber that has a voltage-tunable Fano resonance. Inversely, optical damping of the mechanical resonance is also achieved.
- Hai Zhu
- , Fei Yi
- & Ertugrul Cubukcu
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Letter |
Sub-cycle optical phase control of nanotunnelling in the single-electron regime
Carrier-envelope-phase control of the electronic current over a laterally confined tunnelling gap a few nanometres wide yields current densities above 50 MA cm–2 driven by picojoule-level optical pulses at room temperature.
- Tobias Rybka
- , Markus Ludwig
- & Alfred Leitenstorfer
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Article |
Optical observation of single atomic ions interacting with plasmonic nanorods in aqueous solution
Single zinc and mecury ions are optically detected in solution by detuning of metal nanorod resonators coupled to the whispering gallery mode of a dielectric cavity.
- Martin D. Baaske
- & Frank Vollmer