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• Park, D
• Luo, J
• Jen, A
• Herman, W
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• Jen, A
• Herman, W
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• Park, D
• Luo, J
• Jen, A
• Herman, W

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Polymers 2011, 3(3), 1310-1324; doi:10.3390/polym3031310

Article

Simplified Reflection Fabry-Perot Method for Determination of Electro-Optic Coefficients of Poled Polymer Thin Films

Dong Hun Park ^1,* , Jingdong Luo ² , Alex K.-Y. Jen ²  and Warren N. Herman ¹

¹ Laboratory for Physical Sciences, University of Maryland, College Park, MD 20740, USA ² Department of Materials Sciences and Engineering, University of Washington, Seattle, WA 98198, USA

* Author to whom correspondence should be addressed.

Received: 15 July 2011; in revised form: 12 August 2011 / Accepted: 16 August 2011 / Published: 18 August 2011

(This article belongs to the Special Issue Polymers for Optical Applications)

Download PDF Full-Text [1001 KB, uploaded 18 August 2011 10:36 CEST]

Abstract: We report a simplified reflection mode Fabry-Perot interferometry method for determination of electro-optic (EO) coefficients of poled polymer thin films. Rather than fitting the detailed shape of the Fabry-Perot resonance curve, our simplification involves a technique to experimentally determine the voltage-induced shift in the angular position of the resonance minimum. Rigorous analysis based on optical properties of individual layers of the multilayer structure is not necessary in the data analysis. Although angle scans are involved, the experimental setup does not require a θ-2θ rotation stage and the simplified analysis is an advantage for polymer synthetic efforts requiring quick and reliable screening of new materials. Numerical and experimental results show that our proposed method can determine EO coefficients to within an error of ~8% if poled values for the refractive indices are used.

Keywords: electro-optic polymer; characterization; Fabry-Perot; nonlinear optics

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