Phosphorescence, near-infrared absorption and nonlinear optical property of a new chiral organic crystal

2014 ◽  
Vol 07 (02) ◽  
pp. 1450011 ◽  
Author(s):  
Bei Zhang ◽  
Yu-Mei Zhao ◽  
Guo-Ping Yong
Keyword(s):  
Nonlinear Optical ◽  
Near Infrared ◽  
Nonlinear Optical Property ◽  
Second Harmonic ◽  
Single Step ◽  
Chiral Structure ◽  
Enantiomerically Pure ◽  
Chiral Induction ◽  
Multifunctional Material ◽  
Nir Absorption

A new enantiomerically pure compound was synthesized by the single step reduced reaction from 2-(imidazo[1,2-a]pyridin-2-yl)-2-oxo- N -(pyridin-2-yl)acetamide via chiral induction with D-tartaric acid in good yield. Single crystal data confirm this compound crystallizes in chiral space group P21. Transmission spectrum reveals that the crystal has low UV cut-off of 372 nm and has a good transmittance in the entire visible and near-infrared (NIR)region to 1100 nm, indicating its optical application. Kurtz powder test shows a good second harmonic generation (SHG) which also demonstrates its chiral structure. Moreover, this material exhibits blue phosphorescence with quantum yield of 3.6% and unusually NIR absorption between 1500 nm and 2500 nm. Therefore, this new chiral crystal is a promising multifunctional material for the blue phosphorescence, NIR absorption and nonlinear optical (NLO) applications.

Synthesis, Growth and Characterisation of Nonlinear Optical Nb-Doped L-Prolinium Picrate Single Crystals

2012 ◽  
Vol 584 ◽  
pp. 97-101 ◽  
Author(s):  
T. Gurumurthi ◽  
P. Murugakoothan
Keyword(s):  
Single Crystals ◽  
Nonlinear Optical ◽  
Grown Crystal ◽  
Nonlinear Optical Property ◽  
Second Harmonic ◽  
Thermal Analyses ◽  
Hardness Test ◽  
Dielectric Studies ◽  
Niobium Doped ◽  
Generation Test

A nonlinear optical material Niobium doped L-Prolinium Picrate was synthesized and grown as single crystals by slow evaporation method. The grown crystals were subjected to structural, elemental, thermal, optical and dielectric studies. The structural analysis reveals that Nb : LPP belongs to the monoclinic crystallographic system with space group P21. Optical transparency of the grown crystals was investigated by UV-vis-NIR spectrum. The thermal analyses reveal that Nb doped L-Prolinium Picrate is thermally stable up to 185 °C. The dielectric constant and dielectric loss of the crystal were studied as a function of frequency. The nonlinear optical property of the grown crystal was confirmed by the Kurtz-powder second harmonic generation test and the results are compared with pure LPP. Mechanical strength of the crystal was also carried out by Vicker’s micro hardness test.

scholarly journals Influence of L-threonine on the growth, structural, optical, mechanical and nonlinear optical properties of tartaric acid single crystal

2018 ◽  
Vol 36 (4) ◽  
pp. 630-637
Author(s):  
G. Thilakavathi ◽  
R. Arun Kumar ◽  
V. Gunasekaran
Keyword(s):  
Tartaric Acid ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
X Ray Diffraction ◽  
Etch Patterns ◽  
Near Ir ◽  
Nir Absorption ◽  
Nlo Materials ◽  
Ft Ir ◽  
Crystalline Nature

AbstractSingle crystals of pure and L-threonine added tartaric acid (LT/TA), organic nonlinear optical (NLO) materials were grown from their respective aqueous solution by slow evaporation method. The crystalline nature of the grown crystals was confirmed by powder X-ray diffraction analysis (XRD). UV-Vis-NIR absorption and transmission spectra revealed that the lower cut-off wavelength was around 281 nm and the crystals exhibited high transmission over visible and near IR region. The presence of the functional groups such as O–H, C–H, C–O, C=O in the grown crystals was confirmed by FT-IR analysis. CHN analysis was carried out to confirm the presence of L-threonine in the grown crystals. Microhardness study on the crystals revealed that the hardness number Hv increased with the applied load. The growth pattern of the crystals were analyzed through etching analysis from which the etch patterns in the shape of ‘step-triangle’ were observed. The second harmonic generation (SHG) properties of pure and L-threonine doped tartaric acid crystals were confirmed by Kurtz-Perry powder technique.

Synthesis, crystal structure and second-order nonlinear optical property of a novel pentanary selenide (K3I)[InB12(InSe4)3]

2016 ◽  
Vol 45 (25) ◽  
pp. 10459-10465 ◽  
Author(s):  
Sheng-Ping Guo ◽  
Yang Chi ◽  
Bin-Wen Liu ◽  
Guo-Cong Guo
Keyword(s):  
Crystal Structure ◽  
Optical Property ◽  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Nonlinear Optical Property ◽  
Energy Gap ◽  
Second Harmonic ◽  
Second Order

A novel pentanary selenide (K3I)[InB12(InSe4)3] (P6322) features InSe4 tetrahedron consolidated B12 icosahedron and 1-D chain constructed by InSe6 octahedron and B12Se12 cluster. It is an indirect semiconductor with the energy gap of 1.15 eV and second harmonic generation-active.

Revisiting Thiophosphate Pb3P2S8: A Multifunctional Material Combining a Nonlinear Optical Response and Photocurrent Response

2021 ◽  
Author(s):  
Bingheng Ji ◽  
Elizabeth Guderjahn ◽  
Kui Wu ◽  
Tajamul Hussain Syed ◽  
Wei Wei ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Second Harmonic Generation ◽  
Dft Calculations ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Response ◽  
Nonlinear Optical Response ◽  
Photocurrent Response ◽  
Multifunctional Material

Pb3P2S8 was structurally characterized three decades ago with a second harmonic generation response reported. In this work, Pb3P2S8 was revisited to investigate its electronic structure via DFT calculations and optical...

scholarly journals Giant Nonlinear Optical Activity in Two-Dimensional Palladium Diselenide

2020 ◽  
Author(s):  
Juan YU ◽  
Xiaofei KUANG ◽  
Junzi Li ◽  
Jiahong Zhong ◽  
Cheng Zeng ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Near Infrared ◽  
Second Harmonic ◽  
2D Materials ◽  
Photon Absorption ◽  
Excitation Wavelength ◽  
Saturable Absorption ◽  
Metal Chalcogenides ◽  
Potential Candidate ◽  
Two Dimensional

Abstract Nonlinear optical (NLO) effects in layered atomically thin two-dimensional (2D) materials provide a promising prospect for multifarious optoelectronic applications. The NLO characteristics of transition metal chalcogenides (TMDCs) are attracting growing attention and have been extensively explored recently. However, these materials possess sizable bandgaps ranging from visible to ultraviolet regions, so the investigation of narrow-bandgap materials remains deficient. Here, we report our comprehensive study on the NLO processes in palladium diselenide (PdSe2) flakes that have a near-infrared bandgap. Interestingly, this material exhibits a unique thickness-dependent second harmonic generation (SHG) feature, embodied in the strong (negligible) SHG signals in even (odd) layers, in contrast with that of other TMDCs. Furthermore, the two-photon absorption (TPA) coefficients (β ~4.5×105, 2.83×105, 1.7×105, and 1.85×104 cm/GW) of 1-3 L and bulk PdSe2 are larger by two and three orders of magnitude, compared with that of the conventional 2D materials. Significantly, at the excitation wavelength of 600 nm, a robust saturable absorption with giant modulation depths (αs ~47%, 30%, and 41%) was observed in 1-3 L PdSe2, which has yet been obtained in other 2D materials. Such unique NLO characteristics enable PdSe2 to be a potential candidate for technological innovations in nonlinear optoelectronic devices.

SYNTHESIS, GROWTH AND CHARACTERIZATION OF L-VALINE ZINC HYDROCHLORIDE — A NOVEL SEMI-ORGANIC NONLINEAR OPTICAL SINGLE CRYSTAL

2013 ◽  
Vol 22 (02) ◽  
pp. 1350016 ◽  
Author(s):  
DEEPA JANANAKUMAR ◽  
P. MANI
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Near Infrared ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Dielectric Behavior ◽  
Laser Damage Threshold ◽  
X Ray Diffraction ◽  
Cell Parameters ◽  
Linear Optical Properties

Single crystals of L-valine zinc hydrochloride (LVZHCl), a novel semi-organic nonlinear optical material were synthesized and grown from aqueous solution by slow evaporation method at room temperature. The cell parameters of LVZHCl had been determined using single crystal X-ray diffraction technique. The linear and non-linear optical properties of the crystals were studied by Fourier Transform Infrared, Ultraviolet Visible Near infrared, ac impedance, laser damage threshold, and second harmonic generation analysis. The thermal stability of the crystals was assessed by Differential thermal-Thermogravimetric analysis. The crystallinity and mechanical properties of the crystals were studied by Dielectric behavior and Vickers microhardness test.

Preparation of crystallized glass for application in fiber-type devices

2009 ◽  
Vol 24 (1) ◽  
pp. 288-294 ◽  
Author(s):  
Hirokazu Masai ◽  
Naoki Iwafuchi ◽  
Yoshihiro Takahashi ◽  
Takumi Fujiwara ◽  
Seiki Ohara ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Nonlinear Optical Property ◽  
Glass Composition ◽  
Second Harmonic ◽  
Fiber Type ◽  
Partial Substitution ◽  
Surface Crystallization ◽  
Active Devices ◽  
Nonlinear Optical Devices ◽  
Optical Susceptibility

We have demonstrated that 30BaO–15TiO2–30GeO2–25SiO2 (BTGS25) glass is a candidate for fiber-type nonlinear optical devices using crystallization of glass matrix. We determined the glass composition is suitable for crystallized fiber using partial substitution of Ge in 30BaO–15TiO2–55GeO2 (BTG55) by Si. The BTGS25 satisfied both thermal stability for fiber drawing and electronic polarizability for nonlinear optical property. After crystallization, the BTGS25 bulk crystallized glass showed surface crystallization behavior with the polar c-orientation of fresnoite phase, which was favorable for large second-order optical susceptibility. Following the results of the bulk glass, we prepared the BTGS25 glass fiber without precipitation of fresnoite crystallites. The BTGS25 crystallized fiber also showed c-oriented surface crystallization of fresnoite and second harmonic generation, which shows that the crystallized fiber is a promising material for fiber-type optical active devices.

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