4-ms response time in a photorefractive polymer

Herlocker, Jon A.; Ferrio, Kyle B.; Hendrickx, Eric; Guenther, Brett D.; Mery, Stephane; Kippelen, Bernard; Peyghambarian, Nasser

doi:doi:10.1117/12.348395

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Proceedings / Volume 3623 / Photorefractive Polymers

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4-ms response time in a photorefractive polymer

Proc. SPIE 3623, 168 (1999); doi:10.1117/12.348395

Monday 25 January 1999

San Jose, CA, USA

Organic Photonic Materials and Devices

Bernard Kippelen

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Abstract

Jon A. Herlocker, Kyle B. Ferrio, Brett D. Guenther, Bernard Kippelen, and Nasser Peyghambarian

Optical Sciences Ctr./Univ. of Arizona (USA)

Eric Hendrickx

Optical Sciences Ctr./Univ. of Arizona (Belgium)

Stephane Mery

Institut de Physique et de Chimie des Materiaux de Strasbourg (France)

Efficient photorefractive polymers hold great potential for optical data processing and storage and so have been a topic of intense investigations in recent years. Materials with nearly 100 percent diffraction efficiencies have been developed, but these have been generally characterized by much slower response than their less efficient inorganic counterparts. In this report, we describe a 4-ms initial rise-time using a visible-transparent chromophore in a PVK- based polymer of T_g equals 39 degrees C for 48-V/micrometers bias projected along the grating vector and 250-mW/cm² writing beams. This fast component consistently accounts for 90 percent of the steady-state response and is analyzed as a function of bias field. We also present transient ellipsometry measurements of an orientational response significantly faster than the grating development, suggesting that chromophores alignment sped does not limit transient grating formation. We describe the role of such underlying property measurements in understanding photorefractive transient behavior, and prospects for further improvements.

History

Online May 28, 2003

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http://dx.doi.org/10.1117/12.348395

Citation

Jon A. Herlocker, Kyle B. Ferrio, Eric Hendrickx, Brett D. Guenther, Stephane Mery, Bernard Kippelen and Nasser Peyghambarian, "4-ms response time in a photorefractive polymer", Proc. SPIE 3623, 168 (1999); doi:10.1117/12.348395