Investigation of third-order nonlinear optical properties of DMIT derivatives by Z-scan technique

Three 1,3-dithiole-2-thioxo-4,5-dithiolato compounds, ethyltriphenylphosphonium bis(2-thioxo-1.3-dithiole-4,5-dithiolato)aurate(III) (TPEPADT), benzyltriethylamine bis(2-thioxo-1.3-dithiole-4,5-dithiolato)aurate(III) (BTEAADT) and benzyltriethylamine bis(2-thioxo-1.3-dithiole-4,5-dithiolato)nickel(III) (BTEANDT), were synthesized and the BTEAADT-doped PMMA thin film (BD film) and TPEPADT-doped PMMA thin film (TD film) with mass fraction of 1% were prepared by spin-coating method. The third-order nonlinear optical properties of thin films and three compounds in acetonitrile solutions were investigated by using the laser [Formula: see text]-scan technique with 20 ps pulses at 1064 nm. The [Formula: see text]-scan spectra revealed that TPEPADT and BTEAADT exhibited self-defocusing effect and negligible nonlinear absorption, but BTEANDT exhibited self-focusing effect and stronger saturable absorption. The reason for this difference was analyzed. The magnitudes of third-order nonlinear refractive indices and third-order nonlinear susceptibility were [Formula: see text], 10[Formula: see text] esu for the solution samples and [Formula: see text], [Formula: see text] esu for thin films. All these results suggest that these materials are promising candidates for application in the nonlinear optical area at infrared band.

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THIRD-ORDER NONLINEAR OPTICAL PROPERTIES OF [C7H7(C2H5)3N][Ni(dmit)2] USING Z-SCAN TECHNIQUE

Modern Physics Letters B ◽

10.1142/s0217984910024961 ◽

2010 ◽

Vol 24 (26) ◽

pp. 2659-2667 ◽

Cited By ~ 1

Author(s):

JING-WEI CHEN ◽

QUAN REN ◽

XIN-QIANG WANG ◽

HE-LIANG FAN ◽

QIANG SUN

Keyword(s):

Optical Properties ◽

Cross Section ◽

Nonlinear Optical ◽

Nonlinear Refraction ◽

Nonlinear Optical Properties ◽

Saturable Absorption ◽

Third Order ◽

Intensity Dependence ◽

Focusing Effect ◽

Self Focusing

A novel dmit 2- complex: [ C 7 H 7( C 2 H 5)3 N ][ Ni ( dmit )2], abbreviated as BTEANDT, was synthesized and its third-order nonlinear optical properties were investigated by Z-scan technique at the wavelength of 1064 nm with laser duration of 20 ps. A self-focusing effect and a saturable absorption were observed. The nonlinear refraction coefficient n2 and the nonlinear absorption coefficient β have been found to be 7.311 × 10-18 m 2/W and -6.064 cm/GW when I0=3.025 GW/cm2. The intensity dependence curve of β was also studied and the result reveals that β is proportional to I0. We explained the result with the theory of absorption cross-section.

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Resonant Third-Order Nonlinear Optical Properties of Hemicyanine Doped PMMA Thin Film

Molecular Crystals and Liquid Crystals Science and Technology Section A Molecular Crystals and Liquid Crystals ◽

10.1080/10587259308030967 ◽

1993 ◽

Vol 227 (1) ◽

pp. 143-150

Author(s):

Toshio Sakai ◽

Hidetsugu Ikeda ◽

Yutaka Kawabe ◽

Kenji Kawasaki

Keyword(s):

Thin Film ◽

Optical Properties ◽

Nonlinear Optical ◽

Nonlinear Optical Properties ◽

Third Order

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Glass Structures and Linea/Nonlinear Optical Properties of Ag2O-Doped TeO2 Glasses

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.617.141 ◽

2014 ◽

Vol 617 ◽

pp. 141-144 ◽

Cited By ~ 1

Author(s):

Yusuke Kasuya ◽

Toshiki Suhara ◽

Tomokatsu Hayakawa ◽

Philippe Thomas ◽

Masayuki Nogami

Keyword(s):

Optical Properties ◽

Absorption Edge ◽

Photoelectron Spectroscopy ◽

Nonlinear Optical ◽

Nonlinear Optical Properties ◽

Nonlinear Susceptibility ◽

Third Order ◽

Nonlinear Properties ◽

Nonlinear Optical Devices ◽

Third Order Nonlinear Susceptibility

A family of TeO2-based glasses is known to have high third-order nonlinear properties and expected as nonlinear optical devices. In the present study, we fabricated Ag2O-TeO2 and Ag2O-Nb2O5-TeO2 glasses, and estimated their structures and linear/nonlinear optical properties. The main results showed that the absorption-edge of the glasses was shifted to longer wavelength side with increasing Ag2O content. By Raman spectroscopy, it was found that an increase in Ag2O content promoted to change TeO4 to TeO3/TeO3+1 units. X-ray photoelectron spectroscopy (XPS) revealed the presence of an electronic state of Ag2+ ions, which was supposed to have a large influence on the absorption-edge wavelength. In Ag2O-Nb2O5-TeO2 glass system, the third-order nonlinear susceptibility χ(3) increased with increasing Ag2O content at the expense of Nb2O5 content.

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Third order nonlinear optical properties of DNA-based biopolymers thin films doped with selected natural chromophores

Optical Materials ◽

10.1016/j.optmat.2018.11.037 ◽

2019 ◽

Vol 88 ◽

pp. 181-186 ◽

Cited By ~ 2

Author(s):

Adina-Mirela Anton ◽

Ileana Rau ◽

Francois Kajzar ◽

Alina-Marieta Simion ◽

Cristian Simion

Keyword(s):

Thin Films ◽

Optical Properties ◽

Nonlinear Optical ◽

Nonlinear Optical Properties ◽

Third Order

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INVESTIGATION OF THIRD-ORDER NONLINEAR OPTICAL PROPERTIES OF BFDT-DOPED PMMA THIN FILMS USING Z-SCAN TECHNIQUE

Modern Physics Letters B ◽

10.1142/s0217984909021417 ◽

2009 ◽

Vol 23 (28) ◽

pp. 3361-3368

Author(s):

HELIANG FAN ◽

XINQIANG WANG ◽

QUAN REN ◽

TINGBIN LI ◽

JING SUN ◽

...

Keyword(s):

Thin Films ◽

Optical Properties ◽

Optical Switching ◽

Nonlinear Optical ◽

Doping Concentration ◽

Quartz Substrate ◽

Nonlinear Coefficient ◽

Nonlinear Optical Properties ◽

Potential Candidate ◽

Third Order

A series of polymeric thin films with BFDT (BFDT = 4,5-bis(foroylsulfanyl)-1,3-dithiole-2-thione) doped in PMMA (polymethylmethacrylate) were fabricated by means of spin-coating on quartz substrate. The third-order nonlinear optical properties of the films were investigated by Z-scan technique at 532 nm wavelength with 20 ps pulse width. The influences of doping concentration for third-order nonlinearity were also studied. A self-defocusing effect was observed from the Z-scan curves and the nonlinear refractive index of the film increases with the increase in doping concentration. Our results suggest that considerable nonlinear optical properties were found in BFDT. In addition, it was found that the nonlinear coefficient of the BFDT-doped PMMA thin film was about two orders of magnitude larger than that of homologous materials with organic solvents. By analysis, we can conclude that the material is a potential candidate for applications of nonlinear optics and can be considered in the fabrication of all-optical switching devices, etc.

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Nonlinear optical properties of plasma enhanced chemical vapour deposition grown silicon nanocrystals

MRS Proceedings ◽

10.1557/proc-722-k8.3 ◽

2002 ◽

Vol 722 ◽

Author(s):

G. Vijaya Prakash ◽

M. Cazzanelli ◽

Z. Gaburro ◽

L. Pavesi ◽

F. Iacona ◽

...

Keyword(s):

Optical Properties ◽

Chemical Vapour Deposition ◽

Silicon Nanocrystals ◽

Nonlinear Optical ◽

Vapour Deposition ◽

Chemical Vapour ◽

Nonlinear Optical Properties ◽

Nonlinear Susceptibility ◽

Closed Aperture ◽

Third Order

AbstractWe present a systematic study on the nonlinear optical properties of silicon nanocrystals (Si-nc) grown by plasma enhanced chemical vapour deposition (PECVD). The sign and magnitude of both real and imaginary parts of third-order nonlinear susceptibility χ(3) of Si-nc are measured by Z-scan method. While the closed aperture Z-scan reveals a sign of positive nonlinearity, the open aperture measurements suggests a nonlinear absorption coefficients. Absolute values of χ(3) are in the order of 10-9 esu and show systematic correlation with the Si-nc size, due to quantum confinement related effects.

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