Other photonics articles within Nature Communications

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  • Article
    | Open Access

    Optoacoustic sensing applications are limited by weak electrostrictive force. Here, the authors induce photothermally acoustic vibrations with a focused pulsed laser, and via scanning demonstrate sensing of acoustic impedance at 10 µm spatial resolution, allowing for visualisation of diffusion dynamics.

    • Yizhi Liang
    • , Huojiao Sun
    •  & Bai-Ou Guan

  • Article
    | Open Access

    Dissipative solitons and their symmetry breaking is important for photonic applications. Here the authors show that dissipative solitons can undergo spontaneous symmetry breaking in a two-component nonlinear optical ring resonator, resulting in the coexistence of distinct vectorial solitons with asymmetric, mirror-like states of polarization.

    • Gang Xu
    • , Alexander U. Nielsen
    •  & Miro Erkintalo

  • Article
    | Open Access

    Extracting weak, ultrafast single-shot waveforms from a noisy background has critical uses in many applications. Here, the authors present a method to enhance signals and recover arbitrary waveforms from very noisy backgrounds by manipulating the physical waveform spectra in real time.

    • Benjamin Crockett
    • , Luis Romero Cortés
    •  & José Azaña

  • Article
    | Open Access

    Here, the authors combine digital holographic microscopy with thermoplasmonics in order to identify different contributions of thermally driven fluid dynamic phenomena. They find that local thermal perturbation leads to long-range changes in the dynamics of the system, and demonstrate an all-optical control strategy for microfluidic devices.

    • B. Ciraulo
    • , J. Garcia-Guirado
    •  & R. Quidant

  • Article
    | Open Access

    Suppressing 1/f-shaped low-frequency noise is critical but fundamentally challenging to both electrical and optical transducers. Here, the authors demonstrate a 1/f-noise-free optical sensor with integrated CMOS-compatible heterodyne interferometer and an upconversion amplifying technique, which suppresses the noise by two orders of magnitude.

    • Ming Jin
    • , Shui-Jing Tang
    •  & Yun-Feng Xiao

  • Article
    | Open Access

    Here, the authors generate dissipative Kerr solitons with stable repetition rates and low optical power threshold. They achieve this by actively switching the bias current of injection-locked III-V semiconductor lasers and pulse-pumping crystalline and integrated microresonators with picosecond laser pulses.

    • Wenle Weng
    • , Aleksandra Kaszubowska-Anandarajah
    •  & Tobias J. Kippenberg

  • Article
    | Open Access

    Atomic clocks and their networks are useful tools for optical communications and frequency metrology. Here the authors use phase stabilization and active tip-tilt to suppress atmospheric effects and enable optical frequency transfer through free-space.

    • Benjamin P. Dix-Matthews
    • , Sascha W. Schediwy
    •  & Peter Wolf

  • Article
    | Open Access

    Identification of neurotransmitters remains challenging for surface enhanced Raman spectroscopy (SERS) due to presence of noise. Here, the authors present spread spectrum SERS, which by encoding excited light and decoding SERS signals enables detection of unlabelled neurotransmitters at attomolar concentrations.

    • Wonkyoung Lee
    • , Byoung-Hoon Kang
    •  & Ki-Hun Jeong

  • Article
    | Open Access

    Squeezing light into a nanometer gap offers strong light–matter interaction. Here, the authors develop a nanoelectromechanical system to dynamically control the gap of a plasmonic dimer at nanometer scale, enabling the realization of a light-intensity modulator that operates at high speed and with a low power consumption.

    • Jung-Hwan Song
    • , Søren Raza
    •  & Mark L. Brongersma

  • Article
    | Open Access

    Waveguides typically function by using boundary conditions to contain light. Here, the authors show that by using space-time wavepackets, light can be guided in an unpatterned planar waveguide as the field remains localized along the unbounded dimension.

    • Abbas Shiri
    • , Murat Yessenov
    •  & Ayman F. Abouraddy

  • Article
    | Open Access

    Organic light-emitting diodes (OLEDs) can offer an attractive approach for providing light stimulation in high-throughput optogenetics. Here, the authors report a microstructured OLED array that provides local photo-stimulation in Drosophila melanogaster larvae for controlled motor responses.

    • Caroline Murawski
    • , Stefan R. Pulver
    •  & Malte C. Gather

  • Article
    | Open Access

    Delay lines are a critical part of future optical communications. Here, the authors create a delay line in free space by tuning the group velocities of multiple inline space-time wavepackets to introduce different delays.

    • Murat Yessenov
    • , Basanta Bhaduri
    •  & Ayman F. Abouraddy

  • Article
    | Open Access

    For microcomb-based radiofrequency filters pulse shapers are required, which increase the system cost, footprint, and complexity. Here, the authors bypass this need by exploiting versatile soliton states inherent in microresonator and achieve reconfigurable radiofrequency filters.

    • Jianqi Hu
    • , Jijun He
    •  & Camille-Sophie Brès

  • Article
    | Open Access

    Designing high-performance photodetectors based on hybrid perovskites remains a challenge. Here, the authors demonstrate that Al2O3/2D perovskite heterostructure can be utilized as photoactive dielectric for high-performance MoS2 phototransistors with broadband photoresponse, high photogain and reliability operation.

    • Jiayang Jiang
    • , Xuming Zou
    •  & Lei Liao

  • Article
    | Open Access

    Here, the authors show that the resolution and speed limitations in broadband photo-acoustic spectroscopy can be overcome by combining dual-comb spectroscopy with photo-acoustic detection. This enables broadband detection and allows for rapid and sensitive multi-species molecular analysis across all wavelengths of light.

    • Thibault Wildi
    • , Thibault Voumard
    •  & Tobias Herr

  • Article
    | Open Access

    For advanced microcomb applications, the exact detection of the high repetition rate becomes difficult due to the limited bandwidth of the photodiodes. Here, the authors present a Vernier dual-comb method to sample the main soliton comb and divide the repetition rate by a generating low frequency beat notes.

    • Beichen Wang
    • , Zijiao Yang
    •  & Xu Yi

  • Article
    | Open Access

    For edge-sensitive timing applications, the edge jitter of electrical pulses is important. Here, the authors report on very low rising edge jitter extracted from an optical frequency comb and explore the best condition for low jitter by minimizing the amplitude-to-timing conversion in photodiodes.

    • Minji Hyun
    • , Changmin Ahn
    •  & Jungwon Kim

  • Article
    | Open Access

    Short-wavelength infrared pulses are important for applications in strong field physics and nonlinear optics. Here the authors show multi-stage optical parametric amplification of sub-cycle SWIR pulses with carrier-envelope phase stability.

    • Yu-Chieh Lin
    • , Yasuo Nabekawa
    •  & Katsumi Midorikawa

  • Article
    | Open Access

    Here, the authors demonstrate acousto-optic modulation of silicon nitride microring resonators using high-overtone bulk acoustic wave resonances, allowing modulation in the GHz range via acoustic waves. As an application, an optical isolator is demonstrated with 17 dB non-reciprocity.

    • Hao Tian
    • , Junqiu Liu
    •  & Sunil A. Bhave

  • Article
    | Open Access

    Characterizing the total impulse response (TIR) of photoacoustic microscopes has been challenging due to difficulties distributing appropriate point sources. Here, the authors present a method for 3D generation of spatially-distributed optoacoustic point sources and show that subsequent TIR correction results in improved image quality.

    • Markus Seeger
    • , Dominik Soliman
    •  & Vasilis Ntziachristos

  • Article
    | Open Access

    Molecules of solitons provide insight into fundamental interactions between them and the underlying nonlinear system. The reported heteronuclear molecules, comprised of dissipative solitons with distinct frequencies, temporal widths, and energies enter the multistability regime and yield in interlocked frequency combs.

    • Wenle Weng
    • , Romain Bouchand
    •  & Tobias J. Kippenberg

  • Article
    | Open Access

    Here, the authors demonstrate the use of chaos to obtain 2-octave comb generation. The deformation lifts the circular symmetry and creates chaotic tunneling channels that enable broadband collection of intracavity emission with a single waveguide, introducing a new degree of freedom to microcomb studies.

    • Hao-Jing Chen
    • , Qing-Xin Ji
    •  & Yun-Feng Xiao

  • Article
    | Open Access

    Compact spectrometers can be useful in many applications and many sophisticated architectures have been proposed. In this work, the authors show that with an evaporating droplet on a fiber tip, spectrometry can be robustly and accurately performed with a simple and passive microfluidic system.

    • P. Malara
    • , A. Giorgini
    •  & G. Gagliardi

  • Article
    | Open Access

    At terahertz frequencies, link discovery by scanning is impractically slow. Here, the authors propose an alternative, single-shot link-finding method based on a leaky-wave device.

    • Yasaman Ghasempour
    • , Rabi Shrestha
    •  & Daniel M. Mittleman

  • Article
    | Open Access

    Despite larger nonlinear coefficients, waveguide losses have prevented using semiconductors instead of dielectric materials for on-chip frequency-comb sources. By significantly reducing waveguide loss, ultra-low-threshold Kerr comb generation is demonstrated in a high-Q AlGaAs-on-insulator microresonator system.

    • Lin Chang
    • , Weiqiang Xie
    •  & John E. Bowers

  • Article
    | Open Access

    High throughput imaging flow cytometry suffers from trade-offs between throughput, sensitivity and spatial resolution. Here the authors introduce a method to virtually freeze cells in the image acquisition window to enable 1000 times longer signal integration time and improve signal-to-noise ratio.

    • Hideharu Mikami
    • , Makoto Kawaguchi
    •  & Keisuke Goda

  • Article
    | Open Access

    Imagers capable of reconstructing three-dimensional scenes in the presence of strong background noise are desirable for many remote sensing and imaging applications. Here, the authors report an imager operating in photon-starved and noise-polluted environments through quantum parametric mode sorting.

    • Patrick Rehain
    • , Yong Meng Sua
    •  & Yu-Ping Huang

  • Article
    | Open Access

    In order to satisfy a wide range of modern microwave applications, improved methods are needed to produce low-noise microwave signals. Here the authors demonstrate ultra-low noise microwave synthesis via optical frequency division using a transfer oscillator method applied to a microresonator-based comb on the path to future self-referenced integrated sources.

    • Erwan Lucas
    • , Pierre Brochard
    •  & Tobias J. Kippenberg

  • Article
    | Open Access

    Frequency combs have the potential to be used as multi-wavelength sources in future optical communications through fiber. Here the authors demonstrate joint phase processing of multi-wavelength comb transmission, and show two schemes to improve performance and reduce complexity.

    • Lars Lundberg
    • , Mikael Mazur
    •  & Peter A. Andrekson

  • Article
    | Open Access

    Typical methods for optical vector analysis have tradeoffs among resolution, dynamic range, and bandwidth. The authors use an asymmetric optical probe signal generator and receiver to perform attometer resolution measurement over a THz of bandwidth while maintaining high dynamic range, aiming to characterize emerging optical devices.

    • Ting Qing
    • , Shupeng Li
    •  & Shilong Pan

  • Article
    | Open Access

    Theories state that transitions between extreme waves are allowed but experimental confirmations are lacking because of lack of control strategies. Here, the authors propose and experimentally report, for the first time, the use of topological indices to control the generation of extreme waves.

    • Giulia Marcucci
    • , Davide Pierangeli
    •  & Claudio Conti

  • Article
    | Open Access

    Elastic mapping of individual layers of the cornea with elastography uses Lamb waves, which are dependent on the thickness of each layer and the direction of propagation. Here the authors present Reverberant 3D Optical Coherence Elastography to measure elasticity of single layers using waves propagating in all directions.

    • Fernando Zvietcovich
    • , Pornthep Pongchalee
    •  & Kevin J. Parker

  • Article
    | Open Access

    Tradeoffs between size and performance have limited plasmonic structural color vibrancy at high resolution. Here the authors present a nanophotonic resonant metal-coated nanowire capable of being used as a size invariant, vibrant multicolor pixel.

    • June Sang Lee
    • , Ji Yeon Park
    •  & Jerome K. Hyun

  • Article
    | Open Access

    Full spectral and temporal control of light has a multitude of applications but is often limited in frequency resolution. The authors implement a scheme using a frequency shifting optical loop for optical field spectral shaping with a high degree of control and megahertz resolution

    • Côme Schnébelin
    • , José Azaña
    •  & Hugues Guillet de Chatellus

  • Article
    | Open Access

    In normal dispersion, modulation instability, which is a precursor of Kerr combs, is forbidden due to phase mismatch. Here, the authors show the compensation of such phase mismatch by introducing frequency-dependent loss using a notch filter, hence leading to effective parametric gain and comb formation.

    • Florent Bessin
    • , Auro M. Perego
    •  & Arnaud Mussot

  • Article
    | Open Access

    Phase-coherent transfer of optical frequencies over long open-air paths is necessary in photonic applications. Here the authors demonstrate the parallel transmission of multiple optical carriers in air up to 18 km using a stable near-infrared frequency comb.

    • Hyun Jay Kang
    • , Jaewon Yang
    •  & Seung-Woo Kim

  • Article
    | Open Access

    The realisation of 4D light fields, where longitudinal polarisation represents the fourth dimension, has been limited by the lack of appropriate analysis techniques. Here, the authors use interaction with self-assembled monolayers of fluorescent molecules, which allow for identification of non-paraxial light fields based on a single image frame.

    • Eileen Otte
    • , Kemal Tekce
    •  & Cornelia Denz

  • Article
    | Open Access

    The authors use accelerated protons on photosensitizers (PS, conventionally excited by light), to generate fluorescence and singlet oxygen which can enhance the efficacy of proton therapy. A pilot study on glioblastoma cells confirms differential cell death upon irradiation in the presence of PS.

    • M. Grigalavicius
    • , M. Mastrangelopoulou
    •  & T. A. Theodossiou

  • Article
    | Open Access

    Here, the authors demonstrate full stabilization and control of the two key parameters of a four-wavemixing-based quantum cascade laser comb with metrological precision. These fully-controlled, frequency scalable comb emitters will allow an increasing number of mid- and far-IR applications.

    • Luigi Consolino
    • , Malik Nafa
    •  & Saverio Bartalini

  • Article
    | Open Access

    Optical clock networks have many applications from precision time keeping, sensing to fundamental physics. Here the authors demonstrate robust and free-space femtosecond time synchronization of optical clocks via a moving quadcopter.

    • Hugo Bergeron
    • , Laura C. Sinclair
    •  & Nathan R. Newbury

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