All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds

Luciano De Sio; Alessandro Veltri; Cesare Umeton; Svetlana Serak; Nelson Tabiryan

doi:10.1063/1.3021388

All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds

Luciano De Sio^*
, Alessandro Veltri
, Cesare Umeton
, Svetlana Serak
, Nelson Tabiryan

^*Corresponding author for this work

University of Calabria
Beam Engineering for Advanced Measurements Co

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

We present the observation of an all-optical switching effect that takes place when a light beam of suitable wavelength irradiates a "layered" structure made of polymer slices alternated to films of well aligned liquid crystal (LC) which contain also a small percentage of azo-LC molecules. The simple and reliable fabrication procedure exploits a holographic UV curing technique. The observed switching effect takes place in samples that exhibit diffraction efficiency as high as 85% and is induced in less than 0.5 s by an unfocused pump beam of 245 mW/ cm2 power density. ; 2008 American Institute of Physics.

Original language	English
Article number	181115
Journal	Applied Physics Letters
Volume	93
Issue number	18
DOIs	https://doi.org/10.1063/1.3021388
State	Published - 2008
Externally published	Yes

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title = "All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds",

abstract = "We present the observation of an all-optical switching effect that takes place when a light beam of suitable wavelength irradiates a {"}layered{"} structure made of polymer slices alternated to films of well aligned liquid crystal (LC) which contain also a small percentage of azo-LC molecules. The simple and reliable fabrication procedure exploits a holographic UV curing technique. The observed switching effect takes place in samples that exhibit diffraction efficiency as high as 85\% and is induced in less than 0.5 s by an unfocused pump beam of 245 mW/ cm2 power density. ; 2008 American Institute of Physics.",

author = "\{De Sio\}, Luciano and Alessandro Veltri and Cesare Umeton and Svetlana Serak and Nelson Tabiryan",

note = "Funding Information: This research has been supported by the Air Force Office of Scientific Research, Air Force Material Command, U.S. Air Force, under Grant No. FA8655-07-1-3046.",

year = "2008",

doi = "10.1063/1.3021388",

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volume = "93",

journal = "Applied Physics Letters",

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T1 - All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds

AU - De Sio, Luciano

AU - Veltri, Alessandro

AU - Umeton, Cesare

AU - Serak, Svetlana

AU - Tabiryan, Nelson

N1 - Funding Information: This research has been supported by the Air Force Office of Scientific Research, Air Force Material Command, U.S. Air Force, under Grant No. FA8655-07-1-3046.

PY - 2008

Y1 - 2008

N2 - We present the observation of an all-optical switching effect that takes place when a light beam of suitable wavelength irradiates a "layered" structure made of polymer slices alternated to films of well aligned liquid crystal (LC) which contain also a small percentage of azo-LC molecules. The simple and reliable fabrication procedure exploits a holographic UV curing technique. The observed switching effect takes place in samples that exhibit diffraction efficiency as high as 85% and is induced in less than 0.5 s by an unfocused pump beam of 245 mW/ cm2 power density. ; 2008 American Institute of Physics.

AB - We present the observation of an all-optical switching effect that takes place when a light beam of suitable wavelength irradiates a "layered" structure made of polymer slices alternated to films of well aligned liquid crystal (LC) which contain also a small percentage of azo-LC molecules. The simple and reliable fabrication procedure exploits a holographic UV curing technique. The observed switching effect takes place in samples that exhibit diffraction efficiency as high as 85% and is induced in less than 0.5 s by an unfocused pump beam of 245 mW/ cm2 power density. ; 2008 American Institute of Physics.

UR - https://www.scopus.com/pages/publications/55849119208

U2 - 10.1063/1.3021388

DO - 10.1063/1.3021388

M3 - Artículo

AN - SCOPUS:55849119208

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 181115

ER -

All-optical switching of holographic gratings made of polymer-liquid- crystal-polymer slices containing azo-compounds

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