OOIR: Observatory of International Research

Papers

(The H4-Index of Nature Photonics is 100. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-01-01 to 2026-01-01.)

Article	Citations
Lasers clean up graffiti	543
Photonics celebrates double Nobel Prize achievement	505
Publisher Correction: Optical atomic clock interrogation using an integrated spiral cavity laser	504
The race for wakefield-driven FELs	480
All-optical polarization switching in ferroelectrics	450
Deconvolution enhances fluctuation detection	440
Small tunable X-ray sources may have large impact	420
Converting qubits	369
Triangle-beam interference structured illumination microscopy	361
Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence	349
Photons learn to classify with a quantum edge	327
Solvent-assisted reaction for spontaneous defect passivation in perovskite solar cells	326
Spatio-temporal control of incoherent light with metasurfaces	320
On the simultaneous scattering of two photons by a single two-level atom	305
Room-temperature upconverted superfluorescence	271
Integrated electro-optic isolator on thin-film lithium niobate	261
Direct tensor processing with coherent light	256
Quasi-phase-matched up- and down-conversion in periodically poled layered semiconductors	226
Topological orbital angular momentum extraction and twofold protection of vortex transport	225
Lithography-free reconfigurable photonic processor	224
Observation of loss-enhanced magneto-optical effect	223
Novel light manipulation	211
Author Correction: A ferroelectric multilevel non-volatile photonic phase shifter	210
Femtosecond laser writes a broadband miniaturized isolator	209
Ångström-tunable polarization-resolved solid-state photon sources	208

Room-temperature electrically switchable spin–valley coupling in a van der Waals ferroelectric halide perovskite with persistent spin helix	207
A photonic quantum engine driven by superradiance	205
Light-based catalyst-free conversion of CH4 and CO2	197
Photon-number entanglement generated by sequential excitation of a two-level atom	196
A bit of gain, electrically injected	192
Harnessing plasma absorption in silicon MOS ring modulators	189
New nonlinear opportunities in the ultraviolet	185
Ultrafast energy exchange between two single Rydberg atoms on a nanosecond timescale	177
Resource-efficient photonic quantum computation with high-dimensional cluster states	176
Minute-scale Schrödinger-cat state of spin-5/2 atoms	175
Observation of light-driven band structure via multiband high-harmonic spectroscopy	173
Chiral phonons in microcrystals and nanofibrils of biomolecules	168
High-rate quantum key distribution exceeding 110 Mb s–1	167
Cascaded hard X-ray self-seeded free-electron laser at megahertz repetition rate	165
Towards efficient, scalable and stable perovskite/silicon tandem solar cells	164
High-power AlGaN deep-ultraviolet micro-light-emitting diode displays for maskless photolithography	163
Light sheets for continuous-depth holography and three-dimensional volumetric displays	162
Additive treatment yields high-performance lead-free perovskite light-emitting diodes	161
Plasmonics commercialized?	157
Single-photon detection surprise	156
Wide-field coherent anti-Stokes Raman scattering microscopy using random illuminations	153
Efficient emitters in the NIR-II window	152
A photonic entanglement filter with Rydberg atoms	151
A bright future for attosecond physics	149
Publisher Correction: Femtojoule femtosecond all-optical switching in lithium niobate nanophotonics	148
Dissimilar photons can bunch too	145
Two in one	145
Publisher Correction: Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence	142
Processing quantum randomness with light	136
A digital solution towards deep optical imaging	135
Super-resolution microscopy for the life sciences	133
Microdroplet manipulation	133
Synthetic aperture waveguide holography for compact mixed-reality displays with large étendue	132
Unlocking an optical bistability switch	129
Multi-plateau high-harmonic generation in liquids driven by off-site recombination	129
Anomalous circularly polarized light emission in organic light-emitting diodes caused by orbital–momentum locking	128
Free-form dual-comb spectroscopy for compressive sensing and imaging	128
Experimental quantum-enhanced kernel-based machine learning on a photonic processor	126
Ultrafast atomic-scale scanning tunnelling spectroscopy of a single vacancy in a monolayer crystal	124
Integrated vortex soliton microcombs	124
Unidirectional unpolarized luminescence emission via vortex excitation	124
Metasurface-based bijective illumination collection imaging provides high-resolution tomography in three dimensions	121
Synthetic reflection self-injection-locked microcombs	118
Super-resolution microscopy at its sharpest	117
Hong–Ou–Mandel interference in colloidal CsPbBr3 perovskite nanocrystals	116
All-optical temporal logic gates in localized exciton polaritons	116
A new change of phase	115
An open question	115
Publisher Correction: A full degree-of-freedom spatiotemporal light modulator	115
Suppressing wide-angle light loss and non-radiative recombination for efficient perovskite solar cells	115

Shrinking time-domain spectroscopy to atomic dimensions	114
Sub-cycle photonics in correlated materials	113
Author Correction: Sub-femtonewton force sensing in solution by super-resolved photonic force microscopy	113
Listening to microorganisms with light	112
Tracking nanoscopic motion with minima of light	112
Author Correction: Integrated electro-optic isolator on thin-film lithium niobate	112
Author Correction: In vivo NIR-II fluorescence imaging for biology and medicine	111
Spin-selective strong light–matter coupling in a 2D hole gas-microcavity system	110
Memristors go quantum	110
Entering the vacuum ultraviolet	110
Wide-band frequency modulation of a terahertz intrinsic Josephson junction emitter of a cuprate superconductor	109
Photonic-circuit-integrated titanium:sapphire laser	108
Elucidating the photodegradation pathways of polymer donors for organic solar cells with seven months of outdoor operational stability	108
Towards compact phase-matched and waveguided nonlinear optics in atomically layered semiconductors	108
Integrated electro-optic digital-to-analogue link for efficient computing and arbitrary waveform generation	107
Inverted organic solar cells with an in situ-derived SiOxNy passivation layer and power conversion efficiency exceeding 18%	107
Sub-Doppler spectroscopy of quantum systems through nanophotonic spectral translation of electro-optic light	106
Fast, three-dimensional, live-cell super-resolution imaging with multiplane structured illumination microscopy	104
Sub-50-ns ultrafast upconversion luminescence of a rare-earth-doped nanoparticle	102
An adaptive moiré sensor for spectro-polarimetric hyperimaging	102
In memory of Gabriel Popescu	101
Interferometric imaging of amplitude and phase of spatial biphoton states	101
Costas Soukoulis (1951–2024)	100
Micropillars for single-photon phase shifts	100
Laser gyroscope precisely tracks the Earth’s rotation	100