Long term stability of a poled side-chain nonlinear optical polymer

1998 ◽  
Vol 72 (5) ◽  
pp. 540-541 ◽  
Author(s):  
Hong-Tai Man ◽  
Hyun Nam Yoon
Keyword(s):  
Nonlinear Optical ◽  
Side Chain ◽  
Term Stability ◽  
Long Term Stability ◽  
Optical Polymer ◽  
Nonlinear Optical Polymer

Realization Of Large, Stable Second Order Optical Nonlinearities Through Double-EndCrosslinkable Chromophores

1993 ◽  
Vol 328 ◽  
Author(s):  
C. Xu ◽  
B. Wu ◽  
L. R. Dalton ◽  
Y. Shi ◽  
P. M. Ranon ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Second Order ◽  
Side Chain ◽  
Optical Nonlinearities ◽  
Term Stability ◽  
Long Term Stability

ABSTRACTWe have developed a novel class of double-end crosslinkable (DEC) chromophores. Processible side-chain nonlinear optical (NLO) polymers with crosslinkable groups at the ends of chromophore pendants were synthesized from DEC Monomers. The polymers were processed into good quality films, which were subsequently poled with a corona setup and thermally cured to attain stable noncentrosymmetric order. Using this DEC approach, we have realized large optical nonlinearities (χ(2) = 90–220 pm/V) with long term stability at 125 °C.

Anchoring both ends of the chromophore in the side-chain nonlinear optical polymer for improved thermal stability

1993 ◽  
Author(s):  
Yongqiang Shi ◽  
Peter M. Ranon ◽  
William H. Steier ◽  
Chengzeng Xu ◽  
Bo Wu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Optical Polymer ◽  
Nonlinear Optical Polymer

Investigation of Dipolar Relaxation Processes in a Side-Chain Nonlinear Optical Polymer

1996 ◽  
Vol 446 ◽  
Author(s):  
Z. -Y. Cheng ◽  
R. S. Katiyar ◽  
S. Bauer ◽  
S. Bauer-Gogonea
Keyword(s):  
Glass Transition ◽  
Dielectric Spectroscopy ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Relaxation Processes ◽  
Dipolar Relaxation ◽  
Depolarization Current ◽  
Chain Polymer ◽  
Optical Polymer ◽  
Nonlinear Optical Polymer

AbstractAmorphous thin films of a typical side-chain nonlinear optical polymer were investigated by means of dielectric spectroscopy and thermally stimulated depolarization current (TSDC) within the temperature range -40°C to 230°C. Three distinct relaxation processes, labelled α, β and γ were observed. The α-relaxation, associated with the glass transition, is well described by the Vogel-Fulcher relation, while the sub glass transition β and γ-relaxation follow Arrhenius relations. The advantage of TSDC over dielectric spectroscopy is demonstrated for the investigation of the weak β-relaxation in the side-chain polymer. Furthermore, the β -relaxation is responsible for the initial, fast decay of the electro-optical response of the side-chain polymer at room temperature.

Evidence Of Photo-Oxidation In Photobleaching Process Of Nonlinear Optical Polymer

1995 ◽  
Vol 413 ◽  
Author(s):  
M. H. Lee ◽  
H. J. Lee ◽  
S. G. Han ◽  
H. -Y. Kim ◽  
Y. H. Won
Keyword(s):  
Nonlinear Optical ◽  
Side Chain ◽  
Conformational Transformation ◽  
Photo Degradation ◽  
Photo Oxidation ◽  
Optical Polymer ◽  
Nonlinear Optical Polymers ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores ◽  
Nonlinear Optical Polymer

ABSTRACTThe photobleaching mechanism of nonlinear optical polymers has been investigated; the PMMA based polymers with nonlinear optical chromophores, 4-dimethylamino-4'-nitro-stilbene (DANS), 4-dimethylamino-4'-hexylsulfone-stilbene (DASS), and 4'-(2-hexyloxyethyl) ethyl amino-4-nitro azobenzene (DR-16). The photobleaching was carried out using near-UV lines. FTIR spectra and UV-VIS absorption spectra were obtained after each photobleaching. Refractive indices were measured in the photobleaching processes. The results suggest that the photobleaching mechanism of two PMMA based side-chain polymers with DANS and DASS chromophores results from the photo-oxidation and that of the PMMA based host-guest polymer with DR-16 chromophore results from the combination of the photo-degradation and the trans-cis conformational transformation.

Development of side-chain NLO polymer materials with high electro-optic activity and long-term stability

2005 ◽  
Author(s):  
Diyun Huang ◽  
Timothy Parker ◽  
Hann Wen Guan ◽  
Shuxin Cong ◽  
Danliang Jin ◽  
...  
Keyword(s):  
Polymer Materials ◽  
Side Chain ◽  
Term Stability ◽  
Long Term Stability ◽  
Electro Optic
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