OOIR: Observatory of International Research

Papers

(The H4-Index of Nature Photonics is 93. 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 2021-09-01 to 2025-09-01.)

Article	Citations
Photonics celebrates double Nobel Prize achievement	477
Lasers clean up graffiti	466
The race for wakefield-driven FELs	451
All-optical polarization switching in ferroelectrics	426
Deconvolution enhances fluctuation detection	406
Small tunable X-ray sources may have large impact	388
Publisher Correction: Optical atomic clock interrogation using an integrated spiral cavity laser	378
Spatio-temporal control of incoherent light with metasurfaces	319
Lithography-free reconfigurable photonic processor	317
Topological orbital angular momentum extraction and twofold protection of vortex transport	312
Quasi-phase-matched up- and down-conversion in periodically poled layered semiconductors	290
Triangle-beam interference structured illumination microscopy	287
Room-temperature upconverted superfluorescence	270
On the simultaneous scattering of two photons by a single two-level atom	239
Converting qubits	238
Coherent control of ultrafast extreme ultraviolet transient absorption	231
Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence	227
Integrated electro-optic isolator on thin-film lithium niobate	226
Solvent-assisted reaction for spontaneous defect passivation in perovskite solar cells	225
Novel light manipulation	200
Observation of loss-enhanced magneto-optical effect	200
Cascaded hard X-ray self-seeded free-electron laser at megahertz repetition rate	196
A photonic quantum engine driven by superradiance	195
Harnessing plasma absorption in silicon MOS ring modulators	191
Resource-efficient photonic quantum computation with high-dimensional cluster states	191

Minute-scale Schrödinger-cat state of spin-5/2 atoms	182
Femtosecond laser writes a broadband miniaturized isolator	181
A bit of gain, electrically injected	180
Room-temperature electrically switchable spin–valley coupling in a van der Waals ferroelectric halide perovskite with persistent spin helix	179
Additive treatment yields high-performance lead-free perovskite light-emitting diodes	173
High-rate quantum key distribution exceeding 110 Mb s–1	171
Ultrafast energy exchange between two single Rydberg atoms on a nanosecond timescale	170
Photon-number entanglement generated by sequential excitation of a two-level atom	163
Observation of light-driven band structure via multiband high-harmonic spectroscopy	160
Author Correction: A ferroelectric multilevel non-volatile photonic phase shifter	158
Ångström-tunable polarization-resolved solid-state photon sources	157
New nonlinear opportunities in the ultraviolet	156
Light sheets for continuous-depth holography and three-dimensional volumetric displays	154
Electrically tunable nonlinear polaritonic metasurface	153
Chiral phonons in microcrystals and nanofibrils of biomolecules	150
High-power AlGaN deep-ultraviolet micro-light-emitting diode displays for maskless photolithography	150
Unlocking an optical bistability switch	147
A bright future for attosecond physics	145
Plasmonics commercialized?	145
Super-resolution microscopy at its sharpest	141
Publisher Correction: Femtojoule femtosecond all-optical switching in lithium niobate nanophotonics	138
Dissimilar photons can bunch too	137
Two in one	137
Efficient emitters in the NIR-II window	136
Processing quantum randomness with light	135
A digital solution towards deep optical imaging	134
Free-form dual-comb spectroscopy for compressive sensing and imaging	133
Phase control of terahertz waves moves on chip	133
Integrated vortex soliton microcombs	132
Synthetic reflection self-injection-locked microcombs	132
Hong–Ou–Mandel interference in colloidal CsPbBr3 perovskite nanocrystals	132
Super-resolution microscopy for the life sciences	130
Experimental quantum-enhanced kernel-based machine learning on a photonic processor	128
Synthetic aperture waveguide holography for compact mixed-reality displays with large étendue	124
Metasurface-based bijective illumination collection imaging provides high-resolution tomography in three dimensions	121
Anomalous circularly polarized light emission in organic light-emitting diodes caused by orbital–momentum locking	121
Microdroplet manipulation	120
Wide-field coherent anti-Stokes Raman scattering microscopy using random illuminations	119
Ultrafast atomic-scale scanning tunnelling spectroscopy of a single vacancy in a monolayer crystal	116
Publisher Correction: Van der Waals waveguide quantum electrodynamics probed by infrared nano-photoluminescence	114
Unidirectional unpolarized luminescence emission via vortex excitation	114
A photonic entanglement filter with Rydberg atoms	114
All-optical temporal logic gates in localized exciton polaritons	113
An open question	112
Suppressing wide-angle light loss and non-radiative recombination for efficient perovskite solar cells	112
Plasmonic lasers turn magnetic	112
A new change of phase	110
Memristors go quantum	110
Author Correction: Giant optical anisotropy in a quasi-one-dimensional crystal	109
Shrinking time-domain spectroscopy to atomic dimensions	107

Publisher Correction: A full degree-of-freedom spatiotemporal light modulator	107
Author Correction: Sub-femtonewton force sensing in solution by super-resolved photonic force microscopy	104
Sub-cycle photonics in correlated materials	104
Tracking nanoscopic motion with minima of light	103
Listening to microorganisms with light	102
Sub-Doppler spectroscopy of quantum systems through nanophotonic spectral translation of electro-optic light	100
Author Correction: Integrated electro-optic isolator on thin-film lithium niobate	100
Interferometric imaging of amplitude and phase of spatial biphoton states	99
Fast, three-dimensional, live-cell super-resolution imaging with multiplane structured illumination microscopy	99
Spin-selective strong light–matter coupling in a 2D hole gas-microcavity system	99
Towards compact phase-matched and waveguided nonlinear optics in atomically layered semiconductors	97
Integrated electro-optic digital-to-analogue link for efficient computing and arbitrary waveform generation	97
Author Correction: In vivo NIR-II fluorescence imaging for biology and medicine	97
An adaptive moiré sensor for spectro-polarimetric hyperimaging	95
Synthetic helical dichroism for six-dimensional optical orbital angular momentum multiplexing	95
Photonic-circuit-integrated titanium:sapphire laser	95
Sub-50-ns ultrafast upconversion luminescence of a rare-earth-doped nanoparticle	94
Wide-band frequency modulation of a terahertz intrinsic Josephson junction emitter of a cuprate superconductor	93
Elucidating the photodegradation pathways of polymer donors for organic solar cells with seven months of outdoor operational stability	93