Approaches Toward Systematic Enhancement and Development of Organic Electro-Optic and All-Optic Materials Possessing Unprecedented Magnitudes of Optical Nonlinearity

1997 ◽  
Author(s):  
Carl W. Dirk ◽  
Ou Xie
Keyword(s):  
Optical Nonlinearity ◽  
Electro Optic

Synthesis and Optical Nonlinearity of Thermally Stable Polyimides Incorporated with Electro-Optic Chromophore as Side Chain

2007 ◽  
Vol 249-250 (1) ◽  
pp. 21-28 ◽  
Author(s):  
Hyun Kyung Ju ◽  
Jong Sun Lim ◽  
Sung Cheol Yoon ◽  
Changjin Lee ◽  
Dong Hoon Choi ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Side Chain ◽  
Thermally Stable ◽  
Electro Optic

Novel low‐power optical nonlinearity in semiconductor quantum well electro‐optic effect devices

1989 ◽  
Vol 54 (24) ◽  
pp. 2432-2434 ◽  
Author(s):  
Ch. Weber ◽  
K.‐H. Schlaad ◽  
C. Klingshirn ◽  
C. v. Hoof ◽  
G. Borghs ◽  
...  
Keyword(s):  
Quantum Well ◽  
Low Power ◽  
Optical Nonlinearity ◽  
Electro Optic ◽  
Semiconductor Quantum Well

Electro‐optic side‐chain polyimide system with large optical nonlinearity and high thermal stability

1994 ◽  
Vol 64 (17) ◽  
pp. 2197-2199 ◽  
Author(s):  
Wataru Sotoyama ◽  
Satoshi Tatsuura ◽  
Tetsuzo Yoshimura
Keyword(s):  
Thermal Stability ◽  
Optical Nonlinearity ◽  
High Thermal Stability ◽  
Side Chain ◽  
Electro Optic

Multifunctional Macromolecules – Some Device Options

1989 ◽  
Vol 175 ◽  
Author(s):  
Michael R. Worboys ◽  
Michael S. Griffith ◽  
Nicholas A. Davies
Keyword(s):  
Material Properties ◽  
Active Material ◽  
Single Layer ◽  
Optical Nonlinearity ◽  
Device Fabrication ◽  
Active Device ◽  
Material Functions ◽  
Electro Optic ◽  
Initial Results ◽  
Proof Of Principle

AbstractMultifunctional macromolecules can, in principal, combine a number of active material functions such as optical nonlinearity and photoconductivity in one material. Multifunctionality may offer new options for device fabrication and implementation. However, in practice the implementation of a device which uses a range of material properties such as piezoelectricity and photoconductivity in a single layer of active material is some distance away. This is in part due to the difficulty of optimising a material simultaneously for two separate properties. Therefore the approach we have taken is to identify device configurations which rely on multilayers, each separate layer providing one of the active device functions. Initial results on the fabrication and characterisation of two such proof of principle devices, a light modulated deformable mirror and a light modulated electro-optic layer, are described.

Thermally Stable Polyimide/Silica Hybrid: Synthesis, Characterization and Optical Nonlinearity

2010 ◽  
Vol 123-125 ◽  
pp. 1275-1278
Author(s):  
Guang Yu Wu ◽  
Cheng Yao ◽  
Feng Xian Qiu
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
High Performance ◽  
Nonlinear Optical ◽  
Sol Gel ◽  
Optical Nonlinearity ◽  
29Si Nmr ◽  
Scanning Calorimetry ◽  
Excellent Thermal Stability ◽  
Electro Optic

An intercalation nonlinear-optical (NLO) polyimide was synthesized based on the 3,3’, 4,4’- Bisphenyltetracarboxylic (BPDA) and [(6-nitrobenzothiazole-2-yl)diazenyl]phenyl-1,3- diamine (NBADA). Then, hybrid polymer was synthesized by the sol-gel technique. FT-IR spectroscopy and 29Si NMR were used to characterize the structure of the hybrid. The results revealed that Q3, Q4 and T3 are the major microstructure elements in forming a network structure. The surface morphology, particle size, crystallinity and the thermal stability of the hybrid were investigated using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). DSC and TGA results showed that the glass transition temperature (Tg) and the decomposition temperature (Td) at 5% mass loss were 243, 359°C and 355, 456°C, respectively. These results showed that the hybrid material had excellent thermal stability than the pure polyimide. The electro-optic coefficients of nonlinear optical polyimide and hybrid were measured at the wavelength of 832 nm. The electro-optic coefficients were 22 and 19pm/V (poling voltage of 3.8KV, 210°C) and the values remained well (retained＞93% for more than 100h). The results suggest that the materials have potential applications for high performance optical device.

Electro-optic properties of a guest-host system containing a phenothiazine-based chromophore: Effect of the chromophore density on the macroscopic optical nonlinearity

2004 ◽  
Vol 12 (5) ◽  
pp. 484-489 ◽  
Author(s):  
Sang Kyu Lee ◽  
Min Ju Cho ◽  
Hyuk Yoon ◽  
Seung Hwan Lee ◽  
Jae Hong Kim ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Host System ◽  
Electro Optic

Photonic Properties of Dendrons and Dendrimers Incorporating Bis-(Diphenylphosphino)Diphenylpolyenes

1999 ◽  
Vol 598 ◽  
Author(s):  
L. Madrigal ◽  
K. Kuhl ◽  
C. Spangler
Keyword(s):  
Substituent Effects ◽  
Building Blocks ◽  
Optical Nonlinearity ◽  
Fine Tuning ◽  
Structure Property ◽  
Conjugated Molecules ◽  
Structure Property Relationships ◽  
Peak Broadening ◽  
Electro Optic ◽  
Device Applications

ABSTRACTSubstituent effects are quite important in fine tuning the photonic properties of conjugated molecules. In designing new chromophores, electron-donating or withdrawing substituents affect the electron distribution in the conjugation sequence, and previous studies to establish structure- property relationships have noted that when second row elements replace first row elements in the structure (e.g. S for O in donor groups), large enhancements of both the second and third order optical nonlinearity are observed. However, along with the observed enhancement of the nonlinearity, a red-shift in the absorption spectra occurs, often with peak broadening and tailing. This absorptivity-nonlinearity trade-off has been a constant concern in proposing organic materials for electro-optic device applications. In this presentation we will review our recent activity in designing new chromophores wherein P replaces N in donor groups and dendrimer building blocks, and the consequences and opportunities resulting from the observed large blue shifts in the spectra.

SYNTHESIS OF A NOVEL POLYURETHANE NLO POLYMER AND CHARACTERIZATION IN OPTICAL NONLINEARITY OF ITS DAS-TCF CHROMOPHORE

2004 ◽  
Vol 13 (01) ◽  
pp. 55-63 ◽  
Author(s):  
YUQUAN SHEN ◽  
JUMING HAO ◽  
LING QIU ◽  
ZHUANGQI CAO ◽  
YANFANG YANG ◽  
...  
Keyword(s):  
Optical Nonlinearity ◽  
Optical Methods ◽  
Optical Nonlinearities ◽  
Electro Optic ◽  
Polyurethane Film ◽  
Molecular Hyperpolarizability

We have synthesized a polyurethane NLO polymer with 2-dicyanomethylene-3-cyano-5, 5-dimethyl-4-p-N, N-diethanol-aminostyrene-2, 5-dihydrofuran (DAS-TCF) chromophore. Micro- and macroscopic optical nonlinearities including the molecular hyperpolarizability of the chromophore and electro-optic coefficient of its polyurethane film at various wavelengths have been measured by typical optical methods (HRS and ATR techniques), and also by a modified solvatochromism method.

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