Publications [#246594] of Bobby D Guenther

Papers Published
  1. Herlocker, JA; Ferrio, KB; Hendrickx, E; Guenther, BD; Mery, S; Kippelen, B; Peyghambarian, N, Direct observation of orientation limit in a fast photorefractive polymer composite, Applied Physics Letters, vol. 74 no. 16 (1999), pp. 2253-2255 [1.123816], [doi] .

    Abstract:
    The photorefractivity and chromophore orientation in polymer composites were studied. The composites were made from poly-N-vinylcarbazole, N-ethylcarbazole, and (2,4,7-trinitro-9-fluorenylidene)malonodinitrile with a fluorinated cyano-tolane chromophore. The transient photorefractive response in four-wave mixing (FWM) and two-beam coupling (TBC) was measured. Transient FWM revealed a photorefractive response dominated by a fast time constant of 4 ms, while transient ellipsometry revealed an orientational response of only 490 μs.