Photobleaching in side chain NLO-polymers

Jan Vydra; Hanno Beisinghoff; Hubertus Feix; M. Eckl; Peter Strohriegl; W. Goertz; Manfred Eich

doi:10.1117/12.222786

5 October 1995 Photobleaching in side chain NLO-polymers

Jan Vydra, Hanno Beisinghoff, Hubertus Feix, M. Eckl, Peter Strohriegl, W. Goertz, Manfred Eich

Proceedings Volume 2527, Nonlinear Optical Properties of Organic Materials VIII; (1995) https://doi.org/10.1117/12.222786
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

Photobleaching experiments on thin films of azo chromophore functionalized methacrylates were carried out to investigate bleaching kinetics and its underlying mechanisms. The polymer film's spatial index variation was measured and compared with a theoretical model of bleaching dynamics. From IR-spectroscopy and from GPC measurements it was found, that bleaching causes a destruction of the chromophore and a broadening of the polymer molecular weight distribution. The generated low molecular weight fractions from both polymer and chromophore photodecay evaporate during annealing above T_g, resulting in a reduction of the film's thickness. Surface roughness increases during photobleaching, causing an increase in waveguide loss. Film surface can be smoothed completely by annealing, thus lowering the optical loss induced by bleaching.

Citation Download Citation

Jan Vydra, Hanno Beisinghoff, Hubertus Feix, M. Eckl, Peter Strohriegl, W. Goertz, and Manfred Eich "Photobleaching in side chain NLO-polymers", Proc. SPIE 2527, Nonlinear Optical Properties of Organic Materials VIII, (5 October 1995); https://doi.org/10.1117/12.222786

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