OOIR: Observatory of International Research

Papers

(The H4-Index of APL Photonics is 33. 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 2021-05-01 to 2025-05-01.)

Article	Citations
Time-gated photon counting in both confocal and offset configurations for cost-effective enhancement of functional near-infrared spectroscopy	115
Binary image classification using collective optical modes of an array of nanolasers	110
High bandwidth frequency modulation of an external cavity diode laser using an intracavity lithium niobate electro-optic modulator as output coupler	99
An ultra-fast liquid switch for terahertz radiation	91
High-resolution time-resolved spectroscopy based on hybrid asynchronous optical sampling	86
Beyond memory-effect matrix-based imaging in scattering media by acousto-optic gating	73
Sensing with submarine optical cables	73
Inverse design and demonstration of on-chip silicon high-order mode pass filter	69
Topological on-chip lasers	62
Sensitive control of broad-area semiconductor lasers by cavity shape	59
Microwave photonics promotes emerging integrated sensing and communication technology	57
Cavity-enhanced nonlinear frequency conversion and manipulation of vector fields	54
Programming universal unitary transformations on a general-purpose silicon photonic platform	51
Talbot interference of whispering gallery modes	48
Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams	47
Optimal generation of mesoscopic twin-beam states by means of a natively femtosecond laser system	46
Three-dimensional hard X-ray ptychographic reflectometry imaging on extended mesoscopic surface structures	45
Integrated buried heaters for efficient spectral control of air-clad microresonator frequency combs	45
Performance enhancement of graphene/Ge near-infrared photodetector by modulating the doping level of graphene	44
Plasmonic enhanced fluorescence via 3D printing spiral conical tapered gold tip bound to optical fiber	42
Ytterbium-laser-driven THz generation in thin lithium niobate at 1.9 kW average power in a passive enhancement cavity	41
High-performance photodetector arrays for near-infrared spectral sensing	40
Rapid fluorescence lifetime imaging microscopy via few-photon imaging	40
Cascaded injection locking of optomechanical crystal oscillators	40
Hybrid integrated tunable external cavity laser with sub-10 Hz intrinsic linewidth	40

Polarization and spatial mode dependent four-wave mixing in a 4H-silicon carbide microring resonator	39
Additive 3D printed optical waveguide for augmented reality	38
Few-cycle Yb-doped laser sources for attosecond science and strong-field physics	37
Unveiling the origins of quasi-phase matching spectral imperfections in thin-film lithium niobate frequency doublers	37
Thermally tunable microring resonators based on germanium-on-insulator for mid-infrared spectrometer	37
Additively manufactured metasurfaces and metamaterials: Designs, fabrications, and applications from microwave to photonics	36
Lensless polarization camera for single-shot full-Stokes imaging	35
Nanophotonics-enabled optical data storage in the age of machine learning	33