Complementary grating dynamics in photorefractive polymers with Alq 3

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

doi:10.1117/12.841039

Complementary grating dynamics in photorefractive polymers with Alq ₃

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

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, Alq ₃ improves the sensitivity, trapping, and breakdown voltage without significant losses in absorption or phase stability.

Original language	English (US)
Title of host publication	Organic Photonic Materials and Devices XII
DOIs	https://doi.org/10.1117/12.841039
State	Published - 2010
Event	Organic Photonic Materials and Devices XII - San Francisco, CA, United States Duration: Jan 26 2010 → Jan 28 2010

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	7599
ISSN (Print)	0277-786X

Other

Other	Organic Photonic Materials and Devices XII
Country/Territory	United States
City	San Francisco, CA
Period	1/26/10 → 1/28/10

Keywords

Competing gratings
Holography
Photorefractive polymers

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.841039

Cite this

Christenson, C. W., Thomas, J., Blanche, P. A., Voorakaranam, R., Norwood, R. A., Yamamoto, M., & Peyghambarian, N. (2010). Complementary grating dynamics in photorefractive polymers with Alq ₃. In Organic Photonic Materials and Devices XII Article 759905 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7599). https://doi.org/10.1117/12.841039

Complementary grating dynamics in photorefractive polymers with Alq ₃. / Christenson, Cory W.; Thomas, Jayan; Blanche, Pierre Alexandre et al.
Organic Photonic Materials and Devices XII. 2010. 759905 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 7599).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Christenson, CW, Thomas, J, Blanche, PA, Voorakaranam, R, Norwood, RA, Yamamoto, M & Peyghambarian, N 2010, Complementary grating dynamics in photorefractive polymers with Alq ₃. in Organic Photonic Materials and Devices XII., 759905, Proceedings of SPIE - The International Society for Optical Engineering, vol. 7599, Organic Photonic Materials and Devices XII, San Francisco, CA, United States, 1/26/10. https://doi.org/10.1117/12.841039

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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, Alq 3 improves the sensitivity, trapping, and breakdown voltage without significant losses in absorption or phase stability.",

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