Resumen

ROMERO-ARELLANO, V.; SOLANO, C.  y  MARTINEZ-PONCE, G.. Gelatina dicromatada modificada para incrementar su resistencia a la humedad. Rev. mex. fis. [online]. 2006, vol.52, n.2, pp.99-103. ISSN 0035-001X.

It is presented a comparison between the diffraction efficiency in holographic phase gratings induced in films prepared with two different mixtures based on dichromated gelatin. The traditional mixture (DCG) is modified incorporating glycerol (DCG-G) before deposition. Both kinds of films were dried under different humidity conditions. It is seen that optical recording on DCG-G films is independent on the moisture settings. Also, the induced refractive index modulation is larger than the one obtained with DGC.

Palabras llave : Holography; photosensitive material; dichromated gelatine.