Y. R. Shen, The Principles of Nonlinear Optics, John Wiley &amp; Sons, New York, 1984, 576 pages.

Hora, Henrique Rego Monteiro da

doi:10.1017/s0263034600001889

Cited by 18 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another non-linear optical phenomenon is harmonic generation, mostly based on the third-order nonlinear optical properties of semiconductor nanoparticles [94,95]. The third-order nonlinearity is also responsible for phenomena such as the Kerr effect and degenerate four-wave mixing (DFWM) [96]. Only a few studies have been carried out on second-order nonlinear optical properties since it is usually believed that the centrosymmetric or near centrosymmetric of the spherical nanoparticles reduces their first-order hyperpolarizability (β) to zero or near zero.…”

Section: Nonlinear Optical Characteristics Of Quantum Dots (Qds) and Core-shell Quantum Dotsmentioning

confidence: 99%

See 1 more Smart Citation

Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications

Kalsoom

et al. 2021

Front. Phys.

View full text Add to dashboard Cite

The strong nonlinear optical behavior of low-dimensional materials, such as quantum dots and core-shell quantum dots, has been a topic of intense research in recent years. As quantum dots have tunable emission via changes in their sizes, they are potentially useful in photo-electronics, photovoltaic nonlinear optics, light-emitting diode fabrication, and laser protections. Variation among core and shell shape and size, along with the chemical composition of quantum dots, define their enhanced nonlinear optical properties. Some specific nonlinear optical properties, such as nonlinear refraction, optical limiting, saturable absorption, reverse saturable absorption of CdTe and CdSe quantum dots (QDs), as well as core-shell QDs and their applications, were assessed in this paper.

show abstract

Section: Nonlinear Optical Characteristics Of Quantum Dots (Qds) and Core-shell Quantum Dotsmentioning

confidence: 99%

“…NLO materials progressively show a substantial part in various photonics characteristics i.e. imaging, detection, transmission, and photon generation [96,107].…”

Section: Nonlinear Optical Characteristics Of Quantum Dots (Qds) and Core-shell Quantum Dotsmentioning

confidence: 99%

Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications

Kalsoom

et al. 2021

Front. Phys.

View full text Add to dashboard Cite

show abstract

“…SFG is a second-order nonlinear optical spectroscopic technique, which provides molecular level information of surfaces and interfaces with an excellent surface/interface specificity. Details on SFG theory, experimental procedures, and data analysis routines can be found elsewhere. − ,− For a typical SFG experiment, a fixed-wavelength visible beam overlaps spatially and temporally with a wavelength-tunable infrared (IR) beam at the surface/interface under study. In our SFG experiments, a 532 nm visible laser beam and frequency-tunable IR beam (1000–4300 cm –1 ) were used in pulsed mode with 20 ps pulse width and a repetition rate of 50 Hz.…”

Section: Methodsmentioning

confidence: 99%

Probing Interfacial Behavior and Antifouling Activity of Adsorbed Copolymers at Solid/Liquid Interfaces

Gao

Khan

et al. 2023

Langmuir

View full text Add to dashboard Cite

Polymers containing poly(ethylene glycol) (PEG) units can exhibit excellent antifouling properties, which have been proposed/used for coating of biomedical implants, separation membranes, and structures in marine environments, as well as active ingredients in detergent formulations to avoid soil redepositioning in textile laundry. This study aimed to elucidate the molecular behavior of a copolymer poly(MMA-co-MPEGMA) containing antiadhesive PEG side chains and a backbone of poly(methyl methacrylate), at a buried polymer/solution interface. Polyethylene terephthalate (PET) was used as a substrate to model polyester textile surfaces. Sum frequency generation (SFG) vibrational spectroscopy was applied to examine the interfacial behavior of the copolymer at PET/solution interfaces in situ and in real time. Complementarily, copolymer adsorption on PET and subsequent antiadhesion against protein foulants were probed by quartz-crystal microbalance experiments with dissipation monitoring (QCM-D). Both applied techniques show that poly(MMA-co-MPEGMA) adsorbs significantly to the PET/solution interface at bulk polymer solution concentrations as low as 2 ppm, while saturation of the surface was reached at 20 ppm. The hydrophobic MMA segments provide an anchor for the copolymer to bind onto PET in an ordered way, while the pendant PEG segments are more disordered but contain ordered interfacial water. In the presence of considerable amounts of dissolved surfactants, poly(MMA-co-MPEGMA) could still effectively adsorb on the PET surface and remained stable at the surface upon washing with hot and cold water or surfactant solution. In addition, it was found that adsorbed poly(MMA-co-MPEGMA) provided the PET surface with antiadhesive properties and could prevent protein deposition, highlighting the superior surface affinity and antifouling performance of the copolymer. The results obtained in this work demonstrate that amphiphilic copolymers containing PMMA anchors and PEG side chains can be used in detergent formulations to modify polyester surfaces during laundry and reduce deposition of proteins (and likely also other soils) on the textile.

show abstract

“…Therefore, the calculated polarization intensity remains unchanged, leading

= 0. That is, for materials with centrosymmetric symmetry, their second-order polarization is zero, and thus no SHG signal is generated [ 36 ]. If a material generates the SHG signal, it indicates that the centrosymmetric symmetry of the material is broken, such as at interfaces and defects.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

“…SHG is a simple, easy, and quick way to identify various characteristics of TMD materials, such as lattice symmetry and orientation [ 41 , 46 , 99 , 101 , 107 , 110 ], stacking angles [ 36 , 42 ], grain boundaries [ 103 ], and layer numbers [ 99 , 101 , 108 ]. In 2013, Malard et al [ 101 ] first revealed the fundamental symmetry and orientation of MoS 2 crystals using SHG ( Figure 5 b).…”

Section: State Of the Art Of Ldm-based Shgmentioning

confidence: 99%

Optical Second Harmonic Generation of Low-Dimensional Semiconductor Materials

Fu,

Liu,

Yue

et al. 2024

Nanomaterials

View full text Add to dashboard Cite

In recent years, the phenomenon of optical second harmonic generation (SHG) has attracted significant attention as a pivotal nonlinear optical effect in research. Notably, in low-dimensional materials (LDMs), SHG detection has become an instrumental tool for elucidating nonlinear optical properties due to their pronounced second-order susceptibility and distinct electronic structure. This review offers an exhaustive overview of the generation process and experimental configurations for SHG in such materials. It underscores the latest advancements in harnessing SHG as a sensitive probe for investigating the nonlinear optical attributes of these materials, with a particular focus on its pivotal role in unveiling electronic structures, bandgap characteristics, and crystal symmetry. By analyzing SHG signals, researchers can glean invaluable insights into the microscopic properties of these materials. Furthermore, this paper delves into the applications of optical SHG in imaging and time-resolved experiments. Finally, future directions and challenges toward the improvement in the NLO in LDMs are discussed to provide an outlook in this rapidly developing field, offering crucial perspectives for the design and optimization of pertinent devices.

show abstract

Y. R. Shen, The Principles of Nonlinear Optics, John Wiley & Sons, New York, 1984, 576 pages.

Cited by 18 publications

References 0 publications

Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications

Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications

Probing Interfacial Behavior and Antifouling Activity of Adsorbed Copolymers at Solid/Liquid Interfaces

Optical Second Harmonic Generation of Low-Dimensional Semiconductor Materials

Contact Info

Product

Resources

About