Results 1 to 10 of about 234 (69)
Nonlinear Absorption and Refraction of Picosecond and Femtosecond Pulses in HgTe Quantum Dot Films
Nanomaterials, 2021 We report measurements of the saturated intensities, saturable absorption, and nonlinear refraction in 70-nm thick films containing 4 nm HgTe quantum dots.
Arturs Bundulis +8 more
doaj +3 more sources
Transformation from Self-Focusing to Self-Defocusing of Silver Nanoparticles
Nanomaterials, 2021 The nonlinear refraction of silver nanoparticles (AgNPs) in n-hexane was studied by using the closed-aperture Z-scan technique with a 532 nm nanosecond laser.
Jijuan Jiang +3 more
doaj +1 more source
Spatial Self-Phase Modulation in Graphene-Oxide Monolayer
Crystals, 2023 The spatial self-phase modulation (SSPM) of the optical field revealed the magnitude and polarity of nonlinear refraction coefficients of the graphene-oxide (GO) atomic layers in an aqueous base solution with a resonant excitation using a chopped quasi ...
Tikaram Neupane +3 more
doaj +1 more source
Конденсированные среды и межфазные границы, 2023 The establishment of the conditions for the formation of nanostructures with plasmon-exciton interaction based onquantum dots and plasmonic nanoparticles that provide unique nonlinear optical properties is an urgent task.
Andrey I. Zvyagin +4 more
doaj +1 more source
Femtosecond Optical Nonlinearity of Nanodiamond Suspensions
Applied Sciences, 2021 High pressure-high temperature (HP-HT) nanodiamonds and detonation nanodiamonds have unique optical properties and are promising materials for various applications in photonics.
Gennady M. Mikheev +6 more
doaj +1 more source
Size Dependence of the Resonant Third-Order Nonlinear Refraction of Colloidal PbS Quantum Dots
Photonics, 2020 Due to their high resonant third-order nonlinear response, lead sulfide quantum dots (QDs) are potential materials for applications in the field of nonlinear optics.
Ivan D. Skurlov +7 more
doaj +1 more source
Photonics, 2021 Optical nonlinearity involved switching draws an important consideration in nonlinear optical studies. Based on that, we explored nonlinear absorption processes in silver nanoparticles synthesized by liquid phase laser ablation technique employing a ...
Edappadikkunnummal Shiju +5 more
doaj +1 more source
Nanomaterials, 2021 InP@ZnS core-shell colloidal quantum dots (CQDs) were synthesized and characterized using the z-scan technique. The nonlinear refraction and nonlinear absorption coefficients (γ = −2 × 10−12 cm2 W−1, β = 4 × 10−8 cm W−1) of these CQDs were determined ...
Rashid A. Ganeev +5 more
doaj +1 more source
Investigation of Nonlinear Optical Processes in Mercury Sulfide Quantum Dots
Nanomaterials, 2022 The authors report the third-harmonic generation, nonlinear refraction, and nonlinear absorption in HgS quantum dot (QD) suspensions and films using the nanosecond and femtosecond pulses.
Vyacheslav V. Kim +10 more
doaj +1 more source
Ultrafast Broadband Nonlinear Optical Response in Co-Doped Sb2Se3 Nanofilms at Near-Infrared
Frontiers in Materials, 2021 Transition metal-doped Sb2Se3 has become a heated topic caused by the strong nonlinear optical response and the ultrafast response time at high laser excitation.
Di Sun +5 more
doaj +1 more source