Incoherent pumping-induced optical limiting [PDF]
Scientific ReportsThe nonlinear optical absorption of a probe field is investigated in a three-level V-type quantum system under a pump-probe configuration. It is demonstrated that the system exhibits saturable absorption (SA) behavior.
Noushin Parkan +3 more
doaj +2 more sources
Nonlinear Absorption and Ultrafast Dynamics of Ag Nanoparticle
Photonics, 2021 Resonant nonlinear optical absorption of silver nanoparticles was studied experimentally via open aperture Z-scan using 130 fs, 400 nm laser pulses.
Jijuan Jiang +3 more
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Free space few-photon nonlinearity in critically coupled polaritonic metasurfaces [PDF]
Nature CommunicationsFew-photon optical nonlinearity in planar solid-state systems is challenging yet crucial for quantum and classical optical information processing. Polaritonic nonlinear metasurfaces have emerged as a promising candidate to push the photon number down ...
Jie Fang +17 more
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Observation of saturable and reverse-saturable absorption at longitudinal surface plasmon resonance in gold nanorods [PDF]
Applied Physics Letters, 2006 Saturable and reverse saturable absorption at longitudinal surface plasmon resonance (SPR) in gold nanorods have been observed using Z scan and transient absorption techniques with femtosecond laser pulses. At lower excitation irradiances, the wavelength dispersion of saturable absorption has been determined near the longitudinal mode of SPR with a ...
Hendry Izaac Elim +2 more
exaly +3 more sources
Near‐Infrared Cocrystal Nanofluorophore with Enhanced Two‐Photon Absorption Cross Sections [PDF]
Advanced ScienceThe growing demand for organic nanoprobes that combine broadband two‐photon absorption (TPA) with near‐infrared (NIR) optical excitation continues to drive advancements in biological imaging and advanced photonics.
Liangmeng Hao +8 more
doaj +2 more sources
Synthesis, Photophysics and Tunable Reverse Saturable Absorption of Bis-Tridentate Iridium(III) Complexes via Modification on Diimine Ligand. [PDF]
Molecules, 2023 Five novel bis-tridentate Ir(III) complexes (Ir-1–Ir-5) incorporating versatile N^N^C ligands and a N^C^N ligand (1,3-di(2-pyridyl)-4,6-dimethylbenzene) were synthesized.
Li G +7 more
europepmc +2 more sources
Optical Properties of New Third-Order Nonlinear Materials Modified by Click Chemistry
Molecules, 2022 A high-yielding click reaction was used to synthesize a series of highly conjugated, symmetrical, as well as asymmetrical compounds with a benzene core. Cyclic voltammetry and ultraviolet/visible absorption spectroscopy were carried out, and proved that ...
Yuzhen Zhao +7 more
doaj +1 more source
Near-infrared saturable and reverse saturable absorption of ion beam synthesized VO2 nanocrystals [PDF]
, 2020 We investigate the nonlinear optical response of a thin film of ion-implanted VO2 nanocrystals with open aperture z-scans involving femtosecond near-infrared pulses. Beyond the established nonlinearity related to the insulator-metal phase transition of
Karl, Helmut +3 more
core +1 more source
All-optical passive photonic diodes based on perovskite and transparent conducting oxide material
Results in Physics, 2023 Low dimensional perovskite emerging as a highly promising class of functional materials for semiconductor optoelectronic applications have drawn great attention.
Yanhua Xu +7 more
doaj +1 more source
Journal of Materiomics, 2023 Here, we investigated the nonlinear optical (NLO) characteristics of carboxyl-functionalized graphene oxide (GO-COOH) in the near-infrared (NIR) region. The results revealed that GO-COOH samples exhibit strong saturable absorption at low pump levels and ...
Han Pan +5 more
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