Actas de congresos
Progress on holographic techniques to study photo-chemical reactions in solid state
Proceedings of SPIE - The International Society for Optical Engineering, v. 4829 II, p. 809-810.
Universidade Estadual de Campinas (UNICAMP)
Universidade Estadual Paulista (UNESP)
In this paper it is presented recent developments in the heterodyne detection holographic techniques for studding photosensitive materials. The actual state of the technique allows simultaneous and independent measurement of the refractive index and of the absorption coefficient changes in photosensitive materials and their use to self-stabilize the fringe pattern. The modeling of the measured signal together with the fringe stabilization allow the long term-fitting of the optical properties and the study the photosensitive materials close to the saturation.