High photorefractive performance of low glass-transition-temperature polymeric composite doped with bifunctional chromophore

Wang, F.; Chen, Z.; Huang, Zhiwen; Gong, Qihuang; Chen, Y.; Chen, H.

doi:10.1007/s003400050494

Cited by 25 publications

(6 citation statements)

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“…The PR performance was reported in detail in Ref. [13], here we report only the measurements ofthe dynamic processes.…”

Section: Discussionmentioning

confidence: 99%

“…Differ from the situation in inorganic ciystals, the mobility of photogenerated holes in polymers is both electric field and temperature dependent and can be described empirically as [4,13] p(E0) = exp[JE] , so the applied-electric-field dependence of r can be simplified as bexp(-.g)+cE r(E0) = (dE: +fE) ' (8) where b, C, d, fare constants determined by experimental geometiy and special material. For drift dominants the transport process, d/fr(eNR/K)2, b/c=eNR/(K2pTrJ.…”

Section: Discussionmentioning

confidence: 99%

“…The glass transition temperature was measured to be 43°C and the film thickness was controlled to be 1OOm by spacers. Typical tilted geometry [13,14] was used in the record of the grating, as shown in Fig. 1.…”

Section: Discussionmentioning

confidence: 99%

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Gratings in doped photorefractive composite containing 1-n-butoxyl-2,5-dimethyl-4-(4'- nitrophenylazo)benzene

et al. 1998

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Theoretical and experimental investigations of the intensity-and field-dependent photorefractive response in polymeric composites were presented. Measurements of the decay time constant and the corresponding gratingamplitude were demonstrated in photorefractive composite consists of 1-n-butoxyl-2,5-dimethyl-4-(4'-nitrophenylazo)benzene (BDMNPAB): poly(N-vinylcarbazole) (PVK):2,4,7-trinitro-9-fluorenone (TNF) with a weight ratio 44:55: 1. Analysis suggested that two gratings exist simultaneously, one was caused by the photorefractive effect, and the other was caused by the photoisomerization process. SummaryWhen two coherent beams overlap in a photorefractive (PR) material, a nonlocal refractive index hologram can be (so-called photorefractive grating) built up. For typical PR inorganic crystals and semiconductors and ceramics, standard band transport model[1,2J can supply a clearly physical description. However, when it is applied in PR polymers, because both the photo-generation quantum efficiency[3] and the mobility of the carrier are dependent on

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“…The PR performance was reported in detail in Ref. [13], here we report only the measurements ofthe dynamic processes.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Gratings in doped photorefractive composite containing 1-n-butoxyl-2,5-dimethyl-4-(4'- nitrophenylazo)benzene

et al. 1998

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“…For four-wave mixing (FWM) and two-beam coupling (TBC) measurements [9], two 633 nm writing He±Ne laser beams were incident on the sample with an inter-beam angle of 208 in air outside the sample. In the TBC experiment, two spolarized beams with a power ratio of 1:1.1 were employed.…”

Section: Introductionmentioning

confidence: 99%

Fast response photorefractive guest-host polymer composite

Zhang

Liu

et al. 2001

Journal of Modern Optics

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A ®lm of composite poly(N-vinylzarbazole): [[4-(dodecanecylmethylamino) phenyl]methylene]-propanedinitrile: C60 was proven to possess attractive photorefractive properties with fast response time. The di raction e ciency was ®tted to the square of a biexponential formula and the fast response time was deduced to be 12 ms at an erasing beam intensity of 1 W/cm 2 . Meanwhile, the strong photorefractive e ect was maintained. An amplitude of index grating as large as 3:1 £ 10 ¡3 at an electric ®eld of 78 V/ mm and ®tted a two-beam coupling gain coe cient of 43 cm ¡1 at 57 V/ mm were observed.

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“…For stability demonstration, the sample has been stored in air for more than one year, no any distinct decay on PR performance, optical quality or stability appears. [3] Based on the three-component designing, another non-azo dye, p,p-diacetyl-4-methoxylstyrene (DAMST), was synthesized by condensation of acetylacetone with 4-methoxybenzaldehyde using piperidine and ice acetic acid as catalyst. The final product was crystallized from diethy ether.…”

mentioning

confidence: 99%

Design, synthesis, fabrication and application of low Tg three-component photorefractive polymer composites

Gong¹,

Wang²,

Huang³

et al.

Technical Digest. CLEO/Pacific Rim '99. Pacific Rim Conference on Lasers and Electro-Optics (Cat. No.99TH8464)

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Low glass transition temperature (Tg) polymer composites, as a new kind of photorefractive (PR) materials, have drawn great attention during the past few years. Their extremely photorefractive performance [lJ have been proven to be mainly contributed from orientational birefringence effect.Usually, to lower the Tg of the composite, a plasticizer had to be added to the photo refractive polymer composite consist ing of photoconductive matrix, photosensitizer and nonlinear optical (NLO) chromophore. Such a four-component composite may suffer deterioration due to crystallization and phase

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High photorefractive performance of low glass-transition-temperature polymeric composite doped with bifunctional chromophore

Cited by 25 publications

References 1 publication

Gratings in doped photorefractive composite containing 1-n-butoxyl-2,5-dimethyl-4-(4'- nitrophenylazo)benzene

Gratings in doped photorefractive composite containing 1-n-butoxyl-2,5-dimethyl-4-(4'- nitrophenylazo)benzene

Fast response photorefractive guest-host polymer composite

Design, synthesis, fabrication and application of low Tg three-component photorefractive polymer composites

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