OOIR: Observatory of International Research

Papers

(The H4-Index of Optics Letters is 45. 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 2021-11-01 to 2025-11-01.)

Article	Citations
Imaginary coupling induced Dirac points and group velocity control in the non-reciprocal Hermitian lattice	108
Dual-channel bistability modulation in a bilayer graphene-based optomechanical system	103
Actively Q-switched self-frequency-doubled Yb:YCOB green laser with output power of a dozen watts	90
Vortex ring beams in nonlinear P T-symmetric systems	86
Suppression of modulation instability in VCSEL by external optical injection	84
Dynamic control of the mode-locked fiber laser using a GO/PS modulator	80
Phase-coded coherent microwave pulse generation based on an actively mode-locked optoelectronic parametric oscillator	79
In vivo biological safety investigation of Yb-CALGO femtosecond laser dental surgery	79
Coherent multi-band MIMO radar: robustness analysis to SSMF-based RF signal delivery	77
Coaxial dual-beam wavefront shaping using nonlocal diffractive metasurfaces in terahertz frequencies	76
Methods of correction to extrinsic parameters in a stereoscopic vision with the assistance of two known-distance points	76
Orthogonal hologram memory extending from visible to UV mediated with TaO_x/TiO₂:Ag heterojunctions	74
Flatbands in a bilayer surface plasmon crystal at a large twist angle due to interlayer strong coupling	73
Solid-state transverse Anderson localized fiber laser	71
Resonant silicon waveguide with strong transverse electric field rotation for magnetic-field-induced non-reciprocity	69
Observing multi-frequency structured illumination patterns based on an evanescent field in a millimeter-scale polymer slide	63
Broadband generation of quasi bound-state-in-continuum modes using subwavelength truncated cone resonators	63
Quasi-distributed acoustic sensing based on optical path difference demodulation for high-frequency and large-amplitude using an optical fiber interferometer array	62
Enhancing THz emission from nonlinear metasurfaces by a Bragg perfect absorber	61
Phase noise elimination in frequency sweeping interferometry based on a common-path interferometer	61
Single-shot multi-color fluorescence microscopy via a colorimetry camera	58
Experimental demonstration of an on-chip spatial light receiver based on inverse design in free-space optical communication	56
Long range topography by dispersion unmatched spectral-domain interferometry based on virtually imaged phased array modes	56
Polarization-insensitive vortex beam generator by the holographic grating on an integrated multi-layer waveguide	54
Non-Hermitian mode-locking synthesized by parity-time and anti-parity-time symmetric modulations	53

Ultracompact and ultralow-loss S-bends with easy fabrication by numerical optimization	53
1.9 µJ external-cavity dumped ultra-broad-area semiconductor nanosecond laser	52
Transmitter dispersion eye closure quaternary assessment based on linear CNN with 1 × 1 convolutional kernel	52
Optical phased array with 2D beam steering based on nonlinear beam mixing	52
Compact effective surface plasmon polariton transmission line with undiminished bandwidth and enhanced field confinement	52
Complexity curtailed MLSE equalizer based on a compact look-up-table for C-band DSB IM/DD transmission	50
Coherent N₂ ⁺ emission mediated by coherent Raman scattering for gas-phase thermometry	50
Design of compact surface-emitting nanolasers based on topological guided-mode resonance	49
Handheld volumetric photoacoustic/ultrasound imaging using an internal scanning mechanism	49
Dispersion-engineered low-crosstalk metasurface for mid-infrared snapshot multi-spectral imaging	48
Entanglement-enhanced phase sensitivity at low frequencies in a truncated SU(1,1) interferometer	48
Ultra-broadband optical amplifiers based on bismuth-doped heterogeneous-core fibers	47
Ultra-compact multimode waveguide bend based on a central width controllable dual Bezier structure	47
Rapid fabrication of highly uniform polygons by femtosecond laser patterning based on free lens modulation	47
Shack–Hartmann wavefront sensor slope measurement algorithm robust to scintillation and sensor saturation	47
Line integral compressed ultrafast photography for large time-scale measurements	47
Fast polarization independent tunable liquid crystal Solc filter using Sagnac configuration	46
Single-crystal CsPbBr₃-based vertical cavity surface emitting laser	46
Theoretical investigation of pure-state single-photon and large-bandwidth-correlation biphoton generation from micro/nanofiber	46
Hyperspectral imaging of acoustically trapped plastics	45
Coherently averaged optical frequency comb spectroscopy with a single electro-optic modulator	45
Unified Stokes–Mueller polarimetry for multi-photon processes at varying wavelengths	45
Nonlinear Airy beam propagation in defected photonic lattices	45
Efficient temporal compression of 10-μJ pulses in periodic layered Kerr media: publisher’s note	45