Quadratic Electro-Optical Characterization of Molecular Nonlinear optical Materials

1987 ◽  
Vol 109 ◽  
Author(s):  
John C. Luong ◽  
N. F. Borrelli ◽  
A. R. Olszeuski
Keyword(s):  
Optical Materials ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Low Frequency ◽  
Second Order ◽  
Third Order ◽  
Kerr Coefficient ◽  
Molecular Compounds ◽  
Order Susceptibility

ABSTRACTA convenient method of measuring the nonlinear optical properties of molecular compounds is described. The method involves measuring the quadratic electro-optical coefficient of a polymer composite containing a variable concentration of the candidate NLO material. The X(3) (ω) value obtained by this low-frequency Kerr measurement, after local-field corrections, can be compared to the nonresonant third-order susceptibility measured by degenerate-four-wave-mixing technique on selective samples. We find that the choice of the polymer matrix dictates the contribution of second-order susceptibility to the Kerr coefficient. Therefore, our method can also be extended to the measurement of second-order susceptibility, analogous to the technique of field-induced second-harmonic-generation.

Effect of Electric Field on Nonlinear Optical Properties of Hydrazone Doped PMMA Films

2012 ◽  
Vol 584 ◽  
pp. 88-91
Author(s):  
N.K. Siji Narendran ◽  
K.R. Reshma ◽  
P. Sudheesh ◽  
K. Chandrasekharan
Keyword(s):  
Optical Properties ◽  
Electric Field ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Laser Pulses ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Single Beam ◽  
Solution Casting Method ◽  
Order Susceptibility

We report the effect of electric field on third order nonlinear optical properties of Hydrazone (Hz) doped Polymethyl methacrylate (PMMA) films. The films were prepared by solution casting method. Poling of films was done by corona discharge. Single beam Z-scan technique with 7ns Nd: YAG laser pulses at 532nm were employed for the measurements. Third order susceptibility of films was measured with an emphasis on the applied electric field. We also demonstrated the second harmonic generation in the corona poled films.

scholarly journals Synthesis and Characterization of New Benzo[e]Indol Salts for Second-Order Nonlinear Optics

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 242 ◽  
Author(s):  
Jiahui Wen ◽  
Linjun Ping ◽  
Ruian Li ◽  
Shufang Shang ◽  
Weidong Zhao ◽  
...  
Keyword(s):  
Data Storage ◽  
Optical Materials ◽  
Second Harmonic ◽  
Optical Quality ◽  
Optical Data Storage ◽  
Second Order ◽  
Optical Data ◽  
Slow Cooling ◽  
Cooling Method

Organic second-order nonlinear optical materials are of great significance in the field of integrated photonics, optical data storage and optical information processing. In this work, two iodide salts with benzo[e]indol cations as electron-withdrawing groups were designed and synthesized, which are (E)-2-(4-hydroxy-3-methoxystyryl)-1,1,3-trimethyl-1H-benzo[e]indol-3-ium iodide (1-TB) and (E)-2-(3,4-dihydroxystyryl)-1,1,3-trimethyl-1H-benzo[e]indol-3-ium iodide (2-TB). Under the irradiation of 1064 nm laser, the second harmonic generations of the 1-TB and 2-TB powders are 760 and 580 times that of urea, respectively. Among them, crystals of 1-TB are successfully grown by a slow cooling method without using seed crystals. Bulk crystal with a size of 8.0 × 3.0 × 1.0 mm3 and many submillimeter single crystals with excellent optical quality are obtained.

Synthesis and Characterization of Third Order Nonlinear Optical Materials

1989 ◽  
Vol 173 ◽  
Author(s):  
L. P. Yu ◽  
M. Chen ◽  
L. R. Dalton ◽  
X. F. Cao ◽  
J. P. Jiang ◽  
...  
Keyword(s):  
Composite Materials ◽  
Optical Activity ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Four Wave Mixing ◽  
Nonlinear Optical Materials ◽  
Synthesis And Characterization ◽  
Wave Mixing ◽  
Third Order

ABSTRACTNew polymers incorporating a variety of electroactive moeities with defined π-electron conjugation lengths have been synthesized and characterized by degenerate four wave mixing (DFWM) techniques. The χ(3)/α values for these materials varied from 10−12 to 10−13 esu cm. This work has identified several promising structures with nonlinear optical activity including organometallic and purely organic materials. The preparation of composite materials has also permitted the measurement of χ(3)/α as a function of the electroactive unit concentration.

Theoretical and experimental research on the third-order nonlinear optical properties of the N-6-hydroxy-hexyl-4-azophenyl-carbazol

2017 ◽  
Vol 26 (02) ◽  
pp. 1750027 ◽  
Author(s):  
Quanjie Zhong ◽  
Shenye Liu ◽  
Jiayi Zhu ◽  
Xingzhi Wu ◽  
Lin Zhang ◽  
...  
Keyword(s):  
Optical Properties ◽  
Femtosecond Laser ◽  
Experimental Research ◽  
Optical Materials ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Properties ◽  
Nonlinear Optical Materials ◽  
Third Order ◽  
The Third

The third-order nonlinear optical properties of the N-6-hydroxy-hexyl-4-azophenyl-carbazol have been investigated both theoretically and experimentally. Using Z-scan method with a femtosecond laser (440[Formula: see text]nm, 190[Formula: see text]fs), the third-order nonlinear optical properties of the N-6-hydroxy-hexyl-4-azophenyl-carbazol were determined. The second-order hyperpolarizability [Formula: see text] of the experiment result was found to be [Formula: see text][Formula: see text]esu. We have also calculated the second-order hyperpolarizability based on the sum-over-states (SOS) method. The theoretical value was in accord with the experiment result. The result showed that the N-6-hydroxy-hexyl-4-azophenyl-carbazol was one of the promising third-order nonlinear optical materials.

High-performance organic second- and third-order nonlinear optical materials for ultrafast information processing

2020 ◽  
Vol 8 (43) ◽  
pp. 15009-15026
Author(s):  
Jieyun Wu ◽  
Zhong’an Li ◽  
Jingdong Luo ◽  
Alex K.-Y. Jen
Keyword(s):  
Information Processing ◽  
Optical Materials ◽  
High Performance ◽  
Nonlinear Optical ◽  
Recent Progress ◽  
Second Order ◽  
Nonlinear Optical Materials ◽  
Third Order ◽  
Ultrafast Information Processing ◽  
Review Reports

The review reports the recent progress in organic second-order and third-order nonlinear optical materials in the Jen group.

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