Nonlinear optical waveguide spectroscopy of a conjugated polymer: poly(p-phenylenevinylene)

Ueberhofen, K.; Deutesfeld, A.; Koynov, Kaloian; Bubeck, Christoph

doi:10.1364/josab.16.001921

Cited by 22 publications

(17 citation statements)

References 78 publications

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“…10,20 We used MEH-PPV from several sources which were synthesized differently. The frequently used, so-called Gilch dehydrohalogenation route yields polymers which have a weight-average molecular weight M w in the order of 10 4 -10 6 g/mol.…”

Section: Methodsmentioning

confidence: 99%

“…The experimental setups for prism coupling and waveguide loss determination were described previously. 20,21,32 A simplified view is shown in Fig. 2.…”

Section: Methodsmentioning

confidence: 99%

“…The quantitative evaluation of the nonlinear refractive index n 2 and nonlinear absorption coefficient α 2 is described in detail elsewhere. 20,21 A crucial step in the evaluation of n 2 and α 2 is the determination of the thickness of the air-gap between the prism base and the film surface which is accomplished by simulation of the angular dependence of the reflected intensity I R . Fig.…”

Section: Intensity Dependent Prism Coupling Of Slab Waveguidesmentioning

confidence: 99%

“…20,21 Fig. 7 shows examples of the changes in refractive index ∆n f and absorption coefficient ∆α f at wavelengths 830 nm and 1064 nm as a function of <I gw >.…”

Section: Intensity Dependent Prism Coupling Of Slab Waveguidesmentioning

confidence: 99%

“…We summarize our recent progress in the materials characterization of PPV derivatives and will present updated and new results as well. 10,11,17,[20][21][22][23][24] Among others, we will address the following questions related to some long standing problems:…”

Section: Introductionmentioning

confidence: 99%

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Multiphoton spectroscopy of polymers for all-optical switching

Bahtiar

Koynov

Kibrom

et al. 2006

Nonlinear Optical Transmission and Multiphoton Processes in Organics IV

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We present nonlinear optical spectros copy of the model conjugated polymer MEH-PPV, a derivative of poly(paraphenylenevinylene) (PPV) and compare it with PPV. We perform multiphoton excited fluorescence spectroscopy and zscan studies of solutions compared with third-harmonic generation, line ar and nonlinear waveguide spectroscopy with intensity dependent prism coupling of thin films in the NIR region. Spectra of the nonlinear absorption coefficient and nonlinear refractive index are used to identify the figures of merit (FOM). We observe a sp ectral window at 1100 -1200 nm were the application demands for all-optical waveguide switching are fulfilled. We demonstrate all-optical refractive index changes in the order of 0.001. Control of the molecular weight of MEH-PPVs enables improved film forming properties, reduced birefringence and ultimately low waveguide propagation losses < 1 dB/cm.

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Section: Methodsmentioning

confidence: 99%

“…The experimental setups for prism coupling and waveguide loss determination were described previously. 20,21,32 A simplified view is shown in Fig. 2.…”

Section: Methodsmentioning

confidence: 99%

Section: Intensity Dependent Prism Coupling Of Slab Waveguidesmentioning

confidence: 99%

“…20,21 Fig. 7 shows examples of the changes in refractive index ∆n f and absorption coefficient ∆α f at wavelengths 830 nm and 1064 nm as a function of <I gw >.…”

Section: Intensity Dependent Prism Coupling Of Slab Waveguidesmentioning

confidence: 99%