Spatial light modulation with an azobenzene-doped polymer by use of biphotonic holography.
Spatial light modulation by use of a biphotonic holographic grating has been demonstrated in an azobenzene-doped polymer film. The mechanism of incoherent-to-coherent optical conversion originates from the photoinduced trans <--> cis isomerization of azobenzene molecules by two color lights. It is also found that when the intensity of the blue beam is varied the output replica of the input information changes sign.
Wu
P
P
Department of Physics, University of Massachusetts, Boston, Massachusetts 02125, USA.
Rao
D V
DV
Kimball
B R
BR
Nakashima
M
M
DeCristofano
B S
BS