Expanded use of fast photography is proposed to characterize laser ablation plasma plumes by the analysis of a set of photographs by means of appropriate mathematical algorithms. The laser ablation plasma plumes studied ...

Photochromic polymers are materials with high potential for applications in optical devices. In this work we analyzed the polymeric matrix effect in convertion and reconvertion efficiency of spiropyran trough Raman spectroscopy ...

In this work nonlinear index refraction of colloidal biosynthesized gold nanoparticles with latex of Jatropha curcas is investigated. Z-scan curves were obtained using a CW Argon ion laser, with an incident power of 20 mW ...

In this work Z-scan curves were obtained for colloidal and film samples of gold nanoparticles synthesized with chitosan. Under similar conditions the film samples showed a bigger response than the colloids. The results ...

We analyze the behavior of the diffraction efficiency as a function of the thickness of the relief holographic grating recorded on a phase emulsion composed by rosin and bromophenol blue (BPB) dye. The emulsions thicknesses ...

We report a photosensitive emulsion by mixing ammonium dichromate with rosin resin diluted in isopropyl alcohol. This material can be easily elaborated. A phase grating in this material was recorded using an argon-ion laser ...