Measurement of the electro-optic properties of poled polymers at λ=1.55 μm by means of sandwich structures with zinc oxide transparent electrode

Abstract

We report on the measurement of the electro-optic properties of poled polymers at λ=1.55 μm via the Teng and Man technique. Measurements of the electro-optic coefficient obtained for two different sandwich structures, using either indium tin oxide (ITO) or aluminum doped zinc oxide (ZnO:Al) semitransparent electrodes, are compared. The experimental results show that the use of ITO electrodes can lead to a largely wrong evaluation of the electro-optic coefficient r33, with respect to that obtained when using ZnO:Al electrodes, whose plasma resonance is shifted to longer wavelengths. Results on the disperse red 1/methyl-metacrylate based sidechain benchmark system are reported.

Use of sandwich structures with ZnO:Al transparent electrodes for the measurement of the electro-optic properties of standard and fluorinated poled copolymers at λ=1.55μm

“…Relative errors as large as 50% can affect the results, depending on a. It is then preferable to use other transparent conducting oxides like aluminium doped zinc oxide (ZnO:Al) [3]. In this work we show results obtained by performing TMT measurements on the disperse red 1/poly-methylmetacrylate (DR1-PMMA) ( Fig.…”

New photonic and electronic polymers

“…A modified Teng-Man reflection apparatus was used to estimate the r 33 electro-optic coefficient [9]. The sample fixture consisted of a film of polymer on indium-tin oxide coated glass with a 200 nm layer of gold deposited on top of the polymer.…”

Fluorinated and Non-Fluorinated Electro-Optic Copolymers: Determination of the Time and Temperature Stability of the Induced Electro-Optic Coefficient

“…However, if the reflectance of the semiconductor electrode is not negligible at the measurement wavelength, the electrodes system can behave as a Fabry-Perot resonator and the evaluation of the electro-optic coefficient obtained via the application of the simplified single pass model is wrong [46]. As most researchers are using indium tin oxide (ITO) as the semitransparent electrode, this means that, unless a deeper theoretical approach is used [45,[47][48][49], all the measurements obtained for wavelengths larger than about 1μm are affected by large errors due to the fact that ITO has got its plasma resonance in near-infrared and becomes reflective.…”