Papers Published

1. Ramachandran, S. and Bishop, S.G. and Guo, J.P. and Brady, D.J., Fabrication of holographic gratings in As₂S₃ glass by photoexpansion and photodarkening, IEEE Photonics Technology Letters, vol. 8 no. 8 (1996), pp. 1041 - 1043 [68.508731] .
   (last updated on 2007/04/11)

   Abstract:
   The spatial dynamics of the photo-induced surface relief and phase gratings in As₂S₃ 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:
   Optical glass;Arsenic compounds;Photochromism;Mathematical models;Optical variables measurement;Atomic force microscopy;Semiconductor device manufacture;Semiconductor device structures;Laser beams;Interferometers;Helium neon lasers;