Special Section on Nanophotonics for Space Applications

Radiation resistance of a gamma-ray irradiated nonlinear optic chromophore

[+] Author Affiliations
Cheng Zhang

Norfolk State University, Department of Chemistry & Center for Materials Research, Norfolk, VA 23504

Edward W. Taylor

International Photonics Consultants, 38 Knife Edge Place, Pagosa Springs, CO 81147

J. Nanophoton. 3(1), 031860 (November 19, 2009). doi:10.1117/1.3272920
History: Received July 9, 2009; Revised November 17, 2009; Accepted November 18, 2009; November 19, 2009; Online November 19, 2009
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Abstract

The radiation resistance of organic electro-optic and optoelectronic materials for space applications is receiving increased attention. An earlier investigation reported that guest-host poled polymer EO modulator devices composed of a phenyltetraene bridge-type chromophore in amorphous polycarbonate (CLD/APC) did not exhibit a decrease in EO response (i.e., an increase in modulation-switching voltage- Vπ) following irradiation by low dose [10-160 krad(Si)] 60Co gamma-rays. To provide further evidences to the observed radiation stability, the post-irradiation responses of 60Co gamma-rays on CLD1/APC thin films are examined by various chemical and spectroscopic methods including: a solubility test, thin-layer chromatography, proton nuclear magnetic resonance spectroscopy, UV-vis absorption, and infra-red absorption. The results indicate that CLD1 and APC did not decompose under gamma-ray irradiation at dose levels ranging from 66-274 krad(Si) and from 61-154 krad(Si), respectively which support the previously reported data.

© 2009 Society of Photo-Optical Instrumentation Engineers

Citation

Cheng Zhang and Edward W. Taylor
"Radiation resistance of a gamma-ray irradiated nonlinear optic chromophore", J. Nanophoton. 3(1), 031860 (November 19, 2009). ; http://dx.doi.org/10.1117/1.3272920


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