Electro-optical properties and poling stability of high glass transition polymers

Manfred Eich; Hanno Beisinghoff; Bengt Knoedler; Michael Ohl; Martin Sprave; Jan Vydra; M. Eckl; Peter Strohriegl; Michael Doerr; Rudolf Zentel; M. Ahlheim; M. Staehelin; B. Zysset; Julienne Liang; Regine Levenson; Joseph Zyss

doi:10.1117/12.187506

23 September 1994 Electro-optical properties and poling stability of high glass transition polymers

Manfred Eich, Hanno Beisinghoff, Bengt Knoedler, Michael Ohl, Martin Sprave, Jan Vydra, M. Eckl, Peter Strohriegl, Michael Doerr, Rudolf Zentel, M. Ahlheim, M. Staehelin, B. Zysset, Julienne Liang, Regine Levenson, Joseph Zyss

Author Affiliations +

Proceedings Volume 2285, Nonlinear Optical Properties of Organic Materials VII; (1994) https://doi.org/10.1117/12.187506
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

Four high T_g side chain polymers have been investigated based on polyimide and acrylate backbones functionalized with DR1 and heterocyclic thiophene chromophores. UV-VIS studies revealed chromophore stability up to 210 degree(s)C. Maximum poling efficiency was found approximately 15 K above T_g. From dielectric relaxation studies and from poling dynamics it is obvious that chromophore reorientation follows an Arrhenius law at temperatures well above T_g leading into a WLF-behavior in the vicinity of T_g. Relaxation of the EO-coefficient could be interpreted in terms of a KWW function. The average relaxation times strongly deviate from the WLF-function at temperatures well below T_g and can be described with an Arrhenius law. Activation energies here are significantly smaller than those in the high temperature limit above T_g, indicating that the chromophore dipoles are incompletely coupled to the polymer (alpha) process. Very good stability was observed for the polyimide P3 with average relaxation times of 10⁴ years at 50 degree(s)C and 4 months at 120 degree(s)C. EO coefficients of up to 12 pm/V at 1541 nm were realized using a poling field strength of 1 MV/cm. EO-coefficient at constant poling field was found to be approximately linearly dependent on chromophore content. Channeled waveguides were fabricated by selective reactive ion etching with small losses of 1 dB/cm at 1318 nm. However, loss varies strongly between 1 dB/cm and 3 dB/cm depending on film quality.

Citation Download Citation

Manfred Eich, Hanno Beisinghoff, Bengt Knoedler, Michael Ohl, Martin Sprave, Jan Vydra, M. Eckl, Peter Strohriegl, Michael Doerr, Rudolf Zentel, M. Ahlheim, M. Staehelin, B. Zysset, Julienne Liang, Regine Levenson, and Joseph Zyss "Electro-optical properties and poling stability of high glass transition polymers", Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); https://doi.org/10.1117/12.187506

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available