Results 11 to 20 of about 2,118,821 (229)

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, Bagher Tabibi, Wan-Joong Kim, Felix Jaetae Seo   +3 more
doaj   +1 more source

Nonlinear Refraction and Absorption in Polymers Used for Femtosecond Direct Laser Writing [PDF]

ACS Omega
Renan Cunha, João V. P. Valverde, Leonardo De Boni, Lino Misoguti, Cleber Renato Mendonça   +4 more
doaj   +2 more sources

Formation of plasmon-exciton nanostructures based on quantum dots and metal nanoparticles with a nonlinear optical response

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, Tamara A. Chevychelova, Aleksey S. Perepelitsa, Mikhail S. Smirnov, Oleg V. Ovchinnikov   +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, Viatcheslav V. Vanyukov, Tatyana N. Mogileva, Konstantin G. Mikheev, Alexander N. Aleksandrovich, Nicholas A. Nunn, Olga A. Shenderova   +6 more
doaj   +1 more source

Nonlinear refraction in CH3NH3PbBr3 single crystals. [PDF]

Optics Letters, 2019
We measure both nonlinear absorption and nonlinear refraction in a ${{\rm CH}_3}{{\rm NH}_3}{{\rm PbBr}_3}$CH3NH3PbBr3 single crystal using the Z-scan technique with femtosecond laser pulses. At 1000 nm, we obtain values of 5.2 cm/GW and ${+}{9.5} \cdot {
C. Kriso, M. Stein, T. Haeger, Neda Pourdavoud, M. Gerhard, A. Rahimi‐Iman, T. Riedl, M. Koch   +7 more
semanticscholar   +1 more source

Nonlinear refraction traveltime tomography [PDF]

SEG Technical Program Expanded Abstracts 1996, 1996
A few important issues for performing nonlinear refraction traveltime tomography have been identified. They include the accuracy of the traveltime and raypath calculations for refraction, the physical information in the refraction traveltime curves, and the characteristics of the refraction traveltime errors.
Jie Zhang, M. Nafi Toksöz
openaire   +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, Evgeniia A. Ponomareva, Azat O. Ismagilov, Sergey E. Putilin, Ilia A. Vovk, Anastasiia V. Sokolova, Anton N. Tcypkin, Aleksandr P. Litvin   +7 more
doaj   +1 more source

Silver Nanoparticles under Nanosecond Pulsed Laser Excitation as an Intensity Sensitive Saturable Absorption to Reverse Saturable Absorption Switching Material

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, Kaniyarakkal Sharafudeen, T. M. Remya, N. K. Siji Narendran, Palengara Sudheesh, Vijayakumar Sadasivan Nair   +5 more
doaj   +1 more source

Nonlinear Optical Characterization of InP@ZnS Core-Shell Colloidal Quantum Dots Using 532 nm, 10 ns Pulses

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, Andrey I. Zvyagin, Ivan A. Shuklov, Maksim G. Spirin, Oleg V. Ovchinnikov, Vladimir F. Razumov   +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, Ivan A. Shuklov, Alaa A. Mardini, Arturs Bundulis, Andrey I. Zvyagin, Rawda Kholany, Anna A. Lizunova, Jurgis Grube, Anatolijs Sarakovskis, Oleg V. Ovchinnikov, Rashid A. Ganeev   +10 more
doaj   +1 more source