Complementary grating dynamics in photorefractive polymers with Alq3

Cory W. Christenson; Jayan Thomas; Pierre-Alexandre Blanche; Ram Voorakaranam; Robert A. Norwood; Michiharu Yamamoto; N. Peyghambarian

doi:10.1117/12.841039

1 March 2010 Complementary grating dynamics in photorefractive polymers with Alq₃

Cory W. Christenson, Jayan Thomas, Pierre-Alexandre Blanche, Ram Voorakaranam, Robert A. Norwood, Michiharu Yamamoto, N. Peyghambarian

Author Affiliations +

Proceedings Volume 7599, Organic Photonic Materials and Devices XII; 759905 (2010) https://doi.org/10.1117/12.841039
Event: SPIE OPTO, 2010, San Francisco, California, United States

Abstract

The electron transporting molecule tris(8-hydroxyquinoline) aluminum (Alq₃) was introduced into a photorefractive composite in a low density to study the effects of electron traps on the performance. Compared to a control sample, Alq₃ samples exhibited higher dielectric strength, over-modulation at reduced voltage, and increased writing speed. Transient measurements indicated grating revelation via decay of a competing grating. The dynamics are consistent with a bipolar charge transport model. Overall, Alq₃ improves the sensitivity, trapping, and breakdown voltage without significant losses in absorption or phase stability.

Citation Download Citation

Cory W. Christenson, Jayan Thomas, Pierre-Alexandre Blanche, Ram Voorakaranam, Robert A. Norwood, Michiharu Yamamoto, and N. Peyghambarian "Complementary grating dynamics in photorefractive polymers with Alq₃", Proc. SPIE 7599, Organic Photonic Materials and Devices XII, 759905 (1 March 2010); https://doi.org/10.1117/12.841039

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