Surface potential technique: a sensitive method for the determination of the order parameter of NLO chromophores in poled polymer

Wol-Yon Hwang; Jang-Joo Kim; Sang Don Jung; Taehyoung Zyung

doi:10.1117/12.165299

16 December 1993 Surface potential technique: a sensitive method for the determination of the order parameter of NLO chromophores in poled polymer

Wol-Yon Hwang, Jang-Joo Kim, Sang Don Jung, Taehyoung Zyung

Author Affiliations +

Proceedings Volume 2025, Nonlinear Optical Properties of Organic Materials VI; (1993) https://doi.org/10.1117/12.165299
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Surface potential technique was applied to determine the orientational order of NLO chromophores in poled polymers. The technique is sensitive enough to detect the electro-optic coefficient of the order of 10^-3 pm/v and it is simple because it does not use any optics. It is purely electrical in contrast with other techniques. Relaxation behavior of poled DR1(1wt%)/PMMA was investigated using the surface potential technique. When the surface of the poled polymer was free from a metal electrode, the surface potentials decay monotonically with time. However, the surface potential measured on a metal electrode which was used as an electrode for poling showed an abnormal decay behavior. It was explained by the charge trap centers at the metal-polymer interface.

Citation Download Citation

Wol-Yon Hwang, Jang-Joo Kim, Sang Don Jung, and Taehyoung Zyung "Surface potential technique: a sensitive method for the determination of the order parameter of NLO chromophores in poled polymer", Proc. SPIE 2025, Nonlinear Optical Properties of Organic Materials VI, (16 December 1993); https://doi.org/10.1117/12.165299

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