Reversible holographic grating formation in polymer solutions.
We demonstrate the reversible optical recording of holographic gratings in nonabsorbing solutions of common homopolymers. These phase gratings exhibit first-order diffraction efficiencies in excess of 50%. They are associated with the spatial modulation of the concentration of the polymer solute initiated, but not solely caused, by radiation forces.
F.O.R.T.H., Institute of Electronic Structure and Laser, P. O. Box 1527, 71110 Heraklion, Greece. benoit@iesl.forth.gr
Benoit
B
Loppinet
Elvira
E
Somma
Nikos
N
Vainos
George
G
Fytas