OOIR: Observatory of International Research

Papers

(The H4-Index of APL Photonics is 32. 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 2021-10-01 to 2025-10-01.)

Article	Citations
High bandwidth frequency modulation of an external cavity diode laser using an intracavity lithium niobate electro-optic modulator as output coupler	104
Integrated buried heaters for efficient spectral control of air-clad microresonator frequency combs	104
Programming universal unitary transformations on a general-purpose silicon photonic platform	84
Special Topic: Photonics in biomedicine	74
Time-gated photon counting in both confocal and offset configurations for cost-effective enhancement of functional near-infrared spectroscopy	68
Optimal generation of mesoscopic twin-beam states by means of a natively femtosecond laser system	63
High-resolution time-resolved spectroscopy based on hybrid asynchronous optical sampling	61
Performance enhancement of graphene/Ge near-infrared photodetector by modulating the doping level of graphene	60
Inverse design and demonstration of on-chip silicon high-order mode pass filter	57
Topological on-chip lasers	57
Evaluation of quantum key distribution systems against injection-locking attacks	56
Cascaded injection locking of optomechanical crystal oscillators	50
Cavity-enhanced nonlinear frequency conversion and manipulation of vector fields	50
Three-dimensional hard X-ray ptychographic reflectometry imaging on extended mesoscopic surface structures	47
Ytterbium-laser-driven THz generation in thin lithium niobate at 1.9 kW average power in a passive enhancement cavity	47
Microwave photonics promotes emerging integrated sensing and communication technology	47
Talbot interference of whispering gallery modes	47
Beyond memory-effect matrix-based imaging in scattering media by acousto-optic gating	46
Additive 3D printed optical waveguide for augmented reality	45
Binary image classification using collective optical modes of an array of nanolasers	45
Schmidt modes carrying orbital angular momentum generated by cascaded systems pumped with Laguerre–Gaussian beams	45
An ultra-fast liquid switch for terahertz radiation	43
Plasmonic enhanced fluorescence via 3D printing spiral conical tapered gold tip bound to optical fiber	42
Hybrid integrated tunable external cavity laser with sub-10 Hz intrinsic linewidth	41
Sensing with submarine optical cables	41

Modulation properties and nonlinear dynamics induced by optical feedback in distributed-feedback quantum cascade lasers	39
Sensitive control of broad-area semiconductor lasers by cavity shape	38
Rapid fluorescence lifetime imaging microscopy via few-photon imaging	37
High-performance photodetector arrays for near-infrared spectral sensing	36
Unveiling the origins of quasi-phase matching spectral imperfections in thin-film lithium niobate frequency doublers	36
Load-dependent optical coherence tomography attenuation imaging: How tissue mechanics can influence optical scattering	33
Supercontinuum generation by saturated second-order nonlinear interactions	33
Widely tunable Ka-band optoelectronic oscillator integrated on thin film lithium niobate platform	32
Flexible organic optoelectronic devices: Design, fabrication, and applications	32