Title :
Fabrication of holographic gratings in As2S3 glass by photoexpansion and photodarkening
Author :
Ramachandran, S. ; Bishop, S.G. ; Guo, J.P. ; Brady, D.J.
Author_Institution :
Centre for Optoelectron. Sci. & Technol., Illinois Univ., Urbana, IL, USA
Abstract :
The spatial dynamics of the photo-induced surface relief and phase gratings in As/sub 2/S/sub 3/ glass are described. Excursion amplitudes up to 150 nm and grating efficiencies up to 27% are observed. Depth and resolution limits for the effect are measured and a model for the resolution limit is proposed.
Keywords :
arsenic compounds; chalcogenide glasses; holographic gratings; optical fabrication; optical glass; photochromism; 27 percent; As/sub 2/S/sub 3/; As/sub 2/S/sub 3/ glass; depth limits; excursion amplitudes; fabrication; grating efficiencies; holographic gratings; phase gratings; photo-induced surface relief; photodarkening; photoexpansion; resolution limits; spatial dynamics; Absorption; Diffraction gratings; Fabrication; Glass; Holography; Interference; Laser beams; Optical surface waves; Photochromism; Spatial resolution;
Journal_Title :
Photonics Technology Letters, IEEE
