Structural diversity of hydrogen-bonded complexes comprising phenol-based and pyridine-based components: NLO properties and crystallographic and spectroscopic studies

CrystEngComm ◽  
2020 ◽  
Vol 22 (27) ◽  
pp. 4552-4565
Author(s):  
Iwona Bryndal ◽  
Marek Drozd ◽  
Tadeusz Lis ◽  
Jan K. Zaręba ◽  
Henryk Ratajczak
Keyword(s):  
Physicochemical Properties ◽  
Harmonic Generation ◽  
Crystal Engineering ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Structural Diversity ◽  
Spectroscopic Studies ◽  
Nlo Properties ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena

Synthesis of compounds with improved physicochemical properties, including nonlinear optical phenomena such as second harmonic generation, might be considered as one of the most challenging aspects of crystal engineering.

ENHANCING CONVERSION EFFICIENCY IN THE SECOND-ORDER NONLINEAR OPTICAL PHENOMENA

2004 ◽  
Vol 13 (03n04) ◽  
pp. 445-449
Author(s):  
JONGBAE KIM ◽  
JUNG JIN JU ◽  
MIN-SU KIM
Keyword(s):  
Harmonic Generation ◽  
Conversion Efficiency ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Phase Matching ◽  
Quasi Phase Matching ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena ◽  
Second Order Nonlinearity

The distributions of electric field and the induced second-order nonlinearity are discussed in a poling scheme where the width of a periodic electrode is shorter than the conventional coherent length. The theoretical aspects of quasi-phase matching for a subsequent experiment in second harmonic generation are analyzed. The present analysis consistently explains that the conversion efficiency can be enhanced if the electrode width is shortened, and maximized if the electrode width is optimized.

K2Sn2ZnSe6, Na2Ge2ZnSe6, and Na2In2GeSe6: a new series of quaternary selenides with intriguing structural diversity and nonlinear optical properties

2016 ◽  
Vol 45 (18) ◽  
pp. 7627-7633 ◽  
Author(s):  
Molin Zhou ◽  
Chao Li ◽  
Xiaoshuang Li ◽  
Jiyong Yao ◽  
Yicheng Wu
Keyword(s):  
Optical Properties ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Structural Diversity ◽  
Nonlinear Optical Properties

New selenides K2Sn2ZnSe6, Na2Ge2ZnSe6, and Na2In2GeSe6 exhibit diverse structures and Na2In2GeSe6 possesses a moderate second harmonic generation response.

scholarly journals Significant second-harmonic generation and bulk photovoltaic effect in trigonal selenium and tellurium chains

2021 ◽  
Author(s):  
Mei-Juan Cheng ◽  
Xiao-Hong Shi ◽  
Shunqing Wu ◽  
Zizhong Zhu
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
First Principles ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Photovoltaic Effect ◽  
First Principles Calculations ◽  
Nlo Properties ◽  
One Dimensional ◽  
Linear And Nonlinear

One-dimensional (1D) selenium and tellurium crystalize in helical chainlike structures and thus exhibit fascinating properties. By performing first-principles calculations, we have researched the linear and nonlinear optical (NLO) properties of...

scholarly journals Study of nonlinear optical phenomena in silicone films encapsulated with SiO2 and Si/SiO2 spherical particles

2021 ◽  
Vol 2103 (1) ◽  
pp. 012119
Author(s):  
V Mastalieva ◽  
A Nikolaeva ◽  
V Neplokh ◽  
D Eurov ◽  
S Makarov ◽  
...  
Keyword(s):  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optoelectronic Devices ◽  
Optical Devices ◽  
Spherical Particles ◽  
Second Harmonic Generation Signal ◽  
Visible Range ◽  
Third Harmonic ◽  
Nonlinear Optical Phenomena

Abstract Infrared converters to visible range are in demand for creation of optoelectronic devices, infrared visualizers and other non-linear optical devices. In this work we study nonlinear optical properties of monodisperse SiO2 and Si/SiO2 spheres encapsulated into silicone films. The fabricated silicone films containing SiO2 spheres demonstrated a bright third harmonic generation signal, and films with Si/SiO2 spheres demonstrated a significant second harmonic generation signal in the whole visible range. The developed materials and methods provide a platform for future infrared to visible converters based on silicon.

Guided wave analysis of fractional TIR-QPM-based broadband SHG in the MIR region in a reverse tapered isotropic slab

2018 ◽  
Vol 84 (2) ◽  
pp. 20501
Author(s):  
Bhaswati Medhi ◽  
Sumita Deb
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Guided Wave ◽  
Wave Optics ◽  
Wave Analysis ◽  
Accurate Representation ◽  
Analytical Work ◽  
Simulation Results ◽  
Optical Phenomena ◽  
Nonlinear Optical Phenomena

This paper is a numeric-analytical work on generating second harmonic by using guided wave optics in lieu of plane ray optics for the reason that guided wave optics gives a more accurate representation of the nonlinear optical phenomena. In this analysis we have taken a reverse tapered isotropic semiconductor slab where the effects of the nonlinear law of reflection are minimized. Other lossy factors like surface roughness, Goos-Hänchen shift and absorption losses are also incorporated in the computer-aided simulation results. The effects of the parametric changes are also explained in the results section to give a better perspective of the whole analysis. The results are obtained in terms of efficiency and 3 dB bandwidth and are superior compared to tapered structure of semiconductor slab.

THE INVESTIGATION OF SECOND-ORDER NONLINEAR OPTICAL PROPERTIES OF P-NITROPHENYLAZOANILINE: SECOND HARMONIC GENERATION AND AB INITIO COMPUTATIONS

2012 ◽  
Vol 11 (01) ◽  
pp. 209-221 ◽  
Author(s):  
ASLI KARAKAŞ ◽  
ZİYA ERDEM KOÇ ◽  
MICHAELA FRIDRICHOVÁ ◽  
PETR NĚMEC ◽  
JAN KROUPA
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Density Functional ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Photon Absorption ◽  
Nlo Properties ◽  
Hartree Fock ◽  
H Nmr

p-nitrophenylazoaniline (1) belongs to the family of compounds with conjugated bonds and delocalized π-electrons, structurally similar to the well known push-pull compound Disperse Red 1 (DR1).1 Due to the assembly of the molecule, nonlinear optical (NLO) properties are expectable and can be more or less accurately predicted. To estimate the potential for second-order NLO properties, the electric dipole moment (μ), dispersion-free dipole polarizabilities (α) and first hyperpolarizabilities (β) have been determined by density functional theory (DFT) quantum chemical calculations at B3LYP/ 6-311 + G(d, p) level. According to the computation results, the synthesized compound exhibits non-zero β values and it might have second-order NLO behavior. Title compound has been synthesized and characterized by FT-IR, 1H-NMR and UV-Vis spectroscopies. The maximum one-photon absorption (OPA) wavelengths were estimated to be shorter than 450 nm by quantum mechanical computations using the configuration interaction (CI) method. The same result was achieved by UV-Vis spectra measurements, whereas the compound exhibited good optical transparency to the visible light. Quantitative measurements of second harmonic generation (SHG) at 800 nm and 1064 nm have been performed. The relative efficiency comparable with that of KDP (kalium diphosphate) has been observed with the exciting wavelength of 1064 nm, while the other wavelength led to strong absorption of produced light by the sample. In the following more detailed study on frequency-dependent first hyperpolarizabilities using time-dependent Hartree–Fock (TDHF) method have been computed at the wavelengths used in SHG measurements.

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