TITLE

High-gain photorefractive reflection gratings in layered photoconductive polymers

AUTHOR(S)
Kwon, O-Pil; Montemezzani, Germano; Günter, Peter; Lee, Suck-Hyun
PUB. DATE
January 2004
SOURCE
Applied Physics Letters;1/5/2004, Vol. 84 Issue 1, p43
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Large two-wave mixing gain in reflection grating geometry is obtained in layered organic photorefractive polymers doped with the chromophore piperidinodicyanostyrene. With an applied field of 60 V/μm and for a grating spacing of 0.205 μm, one measures a two-wave mixing gain coefficient of 104 cm[sup -1] and a diffraction efficiency of 4.8% in 100-μm-thick samples. Our photorefractive and electrochemical investigations suggest that the excellent material performance in reflection grating geometry is associated with an increased effective number of trapping sites. © 2004 American Institute of Physics.
ACCESSION #
11805685

 

Related Articles

  • High-performance reflection gratings in photorefractive polymers. Gallego-Gomez, Francisco; Salvador, Michael; Köber, Sebastian; Meerholz, Klaus // Applied Physics Letters;6/18/2007, Vol. 90 Issue 25, p251113 

    To date highest external diffraction efficiency and two-beam coupling gain at moderate applied fields (about 30% and 260 cm-1, respectively, at 60 V/μm) are obtained in photorefractive reflection gratings with grating periods of about 0.2 μm using a standard low-glass-temperature...

  • Self-enhanced diffraction from fixed photorefractive gratings during coherent reconstruction. Segev, Mordechai; Kewitsch, Anthony; Yariv, Amnon; Rakuljic, George A. // Applied Physics Letters;3/1/1993, Vol. 62 Issue 9, p907 

    Explores the effects of self-enhanced diffraction during coherent reconstruction from fixed photorefractive gratings. Reconstruction of the photorefractive holograms; Formation of secondary gratings between the readout and reconstructed beams.

  • Nonelectrooptic nonlocal photorefractive effect in a polymer composite. Orczyk, Maciek E.; Zieba, Jaroslaw // Applied Physics Letters;7/17/1995, Vol. 67 Issue 3, p311 

    Examines the grating spacing dependence of photorefractive diffraction efficiency in an organic polymer composite. Approaches to photorefractivity in polymer materials; Analysis of the grating spacing dependence of the diffraction efficiency; Techniques for the measurements of photorefractive...

  • Direct method for monitoring two-beam coupling in photorefractive materials. Hall, Jeffrey E.; Higgins, Daniel A. // Review of Scientific Instruments;May2002, Vol. 73 Issue 5, p2103 

    A method for directly monitoring two-beam coupling (2BC) in photorefractive materials is presented. This method allows accurate measurement of the gain and loss in the probe and pump beams, respectively, even in situations where substantial power is diffracted into higher order beams (i.e., for...

  • Recording of low spatial frequency gratings in photorefractive materials. Black, T. D.; Hafiz, A.; Larson, D. A.; Magnusson, R. // Applied Physics Letters;12/4/1989, Vol. 55 Issue 23, p2392 

    Recording of low spatial frequency gratings in iron-doped LiNbO3 crystals using a single write beam by both direct contact and optical projection methods is reported. Gratings with periods in the range 50–200 μm have been produced generating up to 40 visible diffraction orders when...

  • Holographic Bragg grating generation in photorefractive polymer-dissolved liquid-crystal composites. Hiroshi Ono[a]; Tomomi Kawamura; Nazarene Mocam Frias; Keiko Kitamura; Nobuhiro Kawatsuki[b]; Hideki Norisada; Tohei Yamamoto // Journal of Applied Physics;10/1/2000, Vol. 88 Issue 7, p3853 

    Investigates holographic grating formation and annihilation speed, resolution, sensitivity, diffraction efficiency and their dependence on applied field and sample composition. Diffraction efficiency from the Bragg gratings; Limiting factors underlying the nonlinearities and their dynamics.

  • Decay dynamics of laser-induced gratings in LiNbO[sub 3]:Zn. Jiachun Deng; Jinke Wen // Applied Physics Letters;5/16/1994, Vol. 64 Issue 20, p2622 

    Measures the photorefractive properties of lithium niobate:zinc using light-induced grating erasure technique. Increase of photoinduced hole carriers when zinc content exceeds the concentration threshold; Observation of the charge relocation rate at high zinc doping content; Changes in the...

  • Optically induced surface gratings on azoaromatic polymer films. Rochon, P.; Batalla, E. // Applied Physics Letters;1/9/1995, Vol. 66 Issue 2, p136 

    Examines the optically induced surface gratings of an azoaromatic polymer film. Stability of the gratings; Effect of heating the polymer above the glass transition temperature; Involvement of photochemical processes and developing stages in the study of surface alteration of films.

  • Semilinear coherent oscillator with reflection-type photorefractive gratings. Grapinet, M.; Mathey, P.; Odoulov, S.; Rytz, D. // Applied Physics B: Lasers & Optics;Nov2003, Vol. 77 Issue 6/7, p551 

    The saturation intensity, oscillation spectrum, and temporal dynamics of oscillation are studied for a semilinear coherent oscillator with two counterpropagating pump waves and a photorefractive crystal with dominating reflection gratings. The instability of the single-frequency oscillation...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics