Second Harmonic Generation In Amorphous Polymers

Esselin, S.; Barny, P. Le; Robin, Philippe; Broussoux, D.; Dubois, Jean; Raffy, J.; Pocholle, Jean‐Paul

doi:10.1117/12.948223

Cited by 22 publications

(3 citation statements)

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“…The simplest approach to design NLO polymer systems is the use of polymer solutions, so called guest-host systems, in which the NLO chromophore is simply dissolved in a compatible polymer matrix. However, organic molecules dissolved in a glassy polymer [20][21][22][23][24] or in a liquid crystalline host [25][26][27][28] suffer from several problems: i) low solubility of the chromophore in the polymer host (usually not more than 10% before phase separation occurs) which limits the magnitude of the NLO response, ii) the chromophore can act as a plasticizer and can therefore considerably decrease the glass transition temperature of the blend which results in a limitation in the poled-order stability and iii) the chromophore can sublime out of the polymer matrix.…”

Section: General Backgroundmentioning

confidence: 99%

Second-order non-linear optical polymers

Samyn

Verbiest

Persoons

2000

Macromol. Rapid Commun.

122

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In this article we discuss the state of the art in the field of second‐order non‐linear optical polymers. More specifically, we highlight those results that we think made an important contribution to the field, combined with some of our own results. We start with a general overview of all the aspects involved in characterizing second‐order non‐linear optical polymers, from thin film formation and poling to second‐harmonic generation and electro‐optic measurements on such systems. Next, we review the second‐order non‐linear optical properties of selected polymer systems such as poly(vinyl ether)s, polystyrenes, polymethacrylates, main‐chain polymers and high Tg polymers like polyimides and polymaleimides. Finally, we discuss some new polymer systems that might become important in the field of non‐linear optics in the near future.

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Section: General Backgroundmentioning

confidence: 99%

Second-order non-linear optical polymers

Samyn

Verbiest

Persoons

2000

Macromol. Rapid Commun.

122

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“…[6,7] Monomers III and IV were also prepared according to the literature. [7,8] The elemental analyses and 1 H NMR data were consistent with their structures. Poly(p-chloromethyl styrene) (PCMS) was prepared according to the procedure of Matyjaszewski.…”

Section: Synthesis Of Starting Materialsmentioning

confidence: 48%

Second order non-linear optical materials based on poly(p-chloromethyl styrene)

Zhang

Wang

Zhu

et al. 2000

Macromol. Chem. Phys.

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“…The donor‐acceptor or guest/host systems are superior as compared to single crystals; the advantages being easy processability for large area devices and handling of crystals for application in integrated optics or fibre optics. In the earlier reports, the authors have investigated only the electro‐optical properties of guest/host systems without studying in detail the structural or morphological aspects 9–13. Also, the transparency of guest/host systems, which is essential for their use in optical devices, was measured for only low concentrations (10–20%) of NLO material in polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Polymer mediated growth and morphology in MNA/PMMA guest/host microdispersed composites

Saujanya

Pathak

Radhakrishnan

2001

J of Applied Polymer Sci

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ABSTRACT:The structure and morphology in the meta-nitroaniline (MNA) dispersed poly(methyl methacrylate) (PMMA) guest/host system was investigated with respect to composition and different techniques of crystallization. Large changes in the intensities of various X-ray diffraction peaks were observed for both solution grown (SC) and melt crystallized (MC) MNA/PMMA composite films. However, in the former case, the peak corresponding to (060) reflection had maximum intensity, while in the latter, the peak corresponding to (112) reflection was most prominent. At low concentrations, the films appeared to be amorphous and transparent, but electron diffraction studies revealed small ordered domains. Both solution and melt grown MNA/PMMA films contained two types of crystallites having different structures: one having the original orthorhombic structure (a ϭ 6.51 Å, b ϭ 19.35 Å, c ϭ 5.07 Å) of bulk MNA, while the other crystallized in new monoclinic phase with a ϭ 13.0 Å, b ϭ 19.35 Å, c ϭ 10.15 Å, and ␤ ϭ 64°. The presence of the new structure that formed could be due to a formation of complex between PMMA and MNA. This complex formation and new structure was further confirmed by differential scanning calorimeter (DSC) and infrared analysis (IR).

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Second Harmonic Generation In Amorphous Polymers

Cited by 22 publications

References 0 publications

Second-order non-linear optical polymers

Second-order non-linear optical polymers

Second order non-linear optical materials based on poly(p-chloromethyl styrene)

Polymer mediated growth and morphology in MNA/PMMA guest/host microdispersed composites

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