Could anyone help? What is the proper wavelength of the laser if one would like to make the photo-darkening in thin films?

I would like to study the photo-induced structural change in amorphous thin chalcogenide films (Cux[As2(S0.5Se0.5)3]100-x). Just, if anyone could explain on which parameter of the material depends...

11 November 2014 3,960 3 View