Comparison between optical nonlinearity relaxation times from coherent second‐harmonic generation and from incoherent hyper‐Rayleigh scattering

1996 ◽  
Vol 69 (27) ◽  
pp. 4145-4147 ◽  
Author(s):  
Naoki Matsuda ◽  
Geert Olbrechts ◽  
Erik J. H. Put ◽  
Koen Clays ◽  
André Persoons
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Rayleigh Scattering ◽  
Second Harmonic ◽  
Relaxation Times ◽  
Optical Nonlinearity

Second Harmonic Generation in Core (Shell) γ-Fe2O3 (Au) Nanoparticles

2009 ◽  
Vol 152-153 ◽  
pp. 508-511 ◽  
Author(s):  
I.A. Kolmychek ◽  
T.V. Murzina ◽  
S. Fourier ◽  
J. Wouters ◽  
V.K. Valev ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Plasmon Resonance ◽  
Rayleigh Scattering ◽  
Au Nanoparticles ◽  
Second Harmonic ◽  
Core Shell ◽  
Single Nanoparticle

The films containing core (shell) γ-Fe2O3 (Au) nanoparticles that possess the plasmon resonance at the wavelength 550 nm are prepared. The second harmonic generation in these structures is shown to be diffuse and depolarized, that is typical for the hyper-Rayleigh scattering.. The studies of the magnetization-induced second harmonic generation shows that the ratio of the magnetic to nonmagnetic components of the hyperpolarizability of a single nanoparticle, γM/γ0 ~ 0.4 in the field of about 3 kOe.

SECOND ORDER NONLINEAR OPTICAL PROPERTIES IN SILICA-BASED GLASS FILM WAVEGUIDES

1996 ◽  
Vol 05 (02) ◽  
pp. 189-204 ◽  
Author(s):  
S. HORINOUCHI ◽  
H. IMAI ◽  
H. YAMASAKI ◽  
K. FUKAO ◽  
G.J. ZHANG ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Glass Composition ◽  
Second Harmonic ◽  
Optical Nonlinearity ◽  
Second Order ◽  
Time Dependent ◽  
Glass Film ◽  
Second Order Nonlinearity

Phase-matched blue second harmonic generation was observed in a corona-poled Corning 7059 glass film waveguide. The induced quadratic optical nonlinearity was examined by second harmonic generation with a time dependent decay for multi-complex of SiO 2, BaO,B 2 O 3 and/or Al 2 O 3. Glass films with every possible combination of composition were fabricated and examined, The glass composition of SiO 2- BaO-B 2 O 3 and/or SiO 2- BaO-Al 2 O 3 was found to play effective roles in maintaining the induced second order nonlinearity for a longer period of time. This is supposed to be related to distributed traps which come from complex of the glass components.

scholarly journals Beyond the Gouy-Chapman Model with Heterodyne-Detected Second Harmonic Generation

2019 ◽  
Author(s):  
Franz Geiger ◽  
Paul E. Ohno ◽  
HanByul Chang ◽  
Austin P. Spencer ◽  
Mavis D. Boamah ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Lipid Bilayers ◽  
Harmonic Generation ◽  
Rayleigh Scattering ◽  
Second Harmonic ◽  
Mean Field ◽  
Recent Model ◽  
Supported Lipid Bilayers ◽  
New Instrument ◽  
Interfacial Potential

<p>We report ionic strength-dependent phase shifts in second harmonic generation (SHG) signals from charged interfaces that verify a recent model in which dispersion between the fundamental and second harmonic beams modulates observed signal intensities. We show how phase information can be used to unambiguously separate the chi(2) and interfacial potential-dependent chi(3) terms that contribute to the total signal and provide a path to test primitive ion models and mean field theories for the electrical double layer with experiments to which theory must conform. Finally, we demonstrate the new method on supported lipid bilayers and comment on the ability of our new instrument to identify hyper-Rayleigh scattering contributions to common homodyne SHG measurements in reflection geometries.</p>

Size Dependence of Second Harmonic Generation in Cdse Nanocrystals

1999 ◽  
Vol 571 ◽  
Author(s):  
M. Jacobsohn ◽  
U. Banin
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Rayleigh Scattering ◽  
Size Dependence ◽  
Second Harmonic ◽  
Particle Surface ◽  
Harmonic Coefficient ◽  
Cdse Nanocrystals ◽  
Generation Process ◽  
Nanocrystal Quantum Dots

ABSTRACTSecond Harmonic Generation in CdSe nanocrystal quantum dots is observed by Hyper-Rayleigh scattering. We use a Ti-Sapphire femtosecond laser at 820 nm to induce the nonlinear optical response of the nanocrystals in solution. The unit cell normalized second harmonic coefficient βn, shows a substantial systematic enhancement in small sizes. The observed size dependence of the second harmonic generation process, is explained assuming two contributions. The first is a bulk-like contribution, from the non-centrosymmetric nanocrystal core, and the second, a contribution from the particle surface. The latter contribution is most significant in small nanocrystals with a substantial proportion of surface atoms.

Large and anisotropic second harmonic generation of V-V binary phosphorene derivative with permanent dipole

2021 ◽  
Author(s):  
Yadong Wei ◽  
Songsong Wang ◽  
Kaijuan Pang ◽  
Xiaodong Xu ◽  
Ngeywo Tolbert Kaner ◽  
...  
Keyword(s):  
Signal Processing ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
2D Materials ◽  
Optical Nonlinearity ◽  
Optical Signal ◽  
Two Dimensional ◽  
All Optical ◽  
Intense Research

Optical nonlinearity of two-dimensional (2D) materials with permanent dipole is a subject of intense research in the fields ranging from all-optical signal processing to laser nanotechnology due to the potential...

Nonlinear Magneto-Optical Kerr Effect in Gd-Containing Langmuir-Blodgett Films

1998 ◽  
Vol 517 ◽  
Author(s):  
N.V. Didenko ◽  
A.A. Fedyanisn ◽  
G.B. Khomutov ◽  
T.V. Murzina ◽  
O.A. Aktsipetrov
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Rayleigh Scattering ◽  
Second Harmonic ◽  
Rare Earth Ions ◽  
Lb Films ◽  
Langmuir Blodgett ◽  
Langmuir Blodgett Films ◽  
Magneto Optical Kerr Effect ◽  
Wave Induced

AbstractMagnetization induced second harmonic generation (MSHG) is observed in Gd-containing Langmuir-Blodgett (LB) films. The nonlinear optical studies reveal significant alterations in the second harmonic generation (SHG) intensity and in the polarization and phase of the second harmonic (SH) wave induced by application of DC magnetic field. The violation of polarization selection rules and the diffusenes of the MSHG intensity indicates the inhomogeneity of LB structure and the hyper-Rayleigh scattering mechanism of MSHG. The latter proofs the existence of 2D-islands of Gd ions in the structural unit of the LB films which is composed by monolayer of rare-earth ions compressed between two layers of stearic acid molecules.

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