Implantation of Periodic Structures Formed by Silver Particles into Quartz Glass

摘要

Quartz glass samples with a thin photosensitive AgCl-Ag film, prepared by successive evaporation of AgCl (h_(AgCl) approx= 35 nm) and Ag (h_(Ag) approx= 8 nm) in vacuum have been investigated. A periodic structure with a period of d velence 375 nm formed by Ag particles was obtained in films using a p-polarized laser beam (lambda velence 532 nm, P velence 25 mW) at an angle of incidence of phi velence 20 deg. After removing AgCl in a fixing agent, the periodic structure remained on the glass surface. Subsequent irradiation by a CO_(2) laser (lambda velence 10.6 (mu)m, P approx= 20 W) led to the implantation of this structure into the glass with the conservation of its period d and partial conservation of the related dichroism. The fact of implantation is confirmed by the high mechanical and chemical stability of the structure obtained. A possible implantation mechanism, taking into account the thermionic emission, Ag ionic transport, and the presence of free voids in the quartz glass and defects in its structural network, is discussed.