Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

Abstract

The generation of silver species has been investigated in silver‐containing sodo‐gallo‐phosphate glasses subjected to X‐ray irradiations. Radioluminescence spectroscopy has evidenced the presence of isolated and paired silver ions. The proportion of silver pairing is found dominant in ortho‐phosphate glass compositions, compared to poly‐phosphate counterparts. The phosphate glass network is reported to have a decisive impact on X‐Ray photosensitivity and the formation of luminescent silver species, namely Ag2+ hole trap silver ions and Agmx+ silver clusters. The subsistence of femtosecond laser produced silver luminescent structures under X‐Ray irradiation has been demonstrated.

Femtosecond Direct Laser Writing of Silver Clusters in Phosphate Glasses for X-ray Spatially-Resolved Dosimetry

“…This glass was similar in composition to the one detailed in this reference [37]. The second one was an academic silver-containing pyro-phosphate glass (referred to as GPN elsewhere in the publication), synthesized using a classical melting-quenching method [39]. The pyro-phosphate glass is strongly depolymerized phosphate networks, mainly composed of dimeric phosphate tetrahedra.…”

“…Dose evaluation was performed using a PTW Duplex calibrated ionization chamber. Two X-ray irradiation series were conducted, from 5 mGy to 5 kGy and from 2 to 365 Gy [39].…”

“…To our knowledge, no research combining RPL and fs DLW has yet been conducted on those glasses. Recently, we demonstrated the generation of silver species in highly photosensitive silver-containing sodo-gallophosphate glasses exposed to X-rays, and the subsistence under X-ray irradiation of laser-inscribed molecular species such as the fluorescent silver clusters [39]. We reported that the phosphate glass network had a decisive influence on the X-ray photosensitivity and the formation of luminescent silver species, namely Ag 2+ hole traps silver ions and Ag m x+ silver clusters [39].…”

“…Thus, RPL and fs DLW have been combined to estimate the potential of those laser-inscribed structures as local probes of the deposited doses. In the first part, we have deeply analyzed some of the recent results with silver-containing sodo-gallophosphate glass [39]. The spectroscopic properties allow for an estimation of the depth-dependent profiles of the linear absorption coefficient in absolute values.…”

Single‐Pulse‐Induced Ultrafast Spatial Clustering of Metal in Glass: Fine Tunability and Application

“…[ 10–15 ] Although great effort has been devoted to generating metal clustering in glass using UV light irradiation, ultrafast laser (UFL) irradiation, X‐ray irradiation, and ion beam irradiation, precise control over the clustering process has been highly challenging for current and primary approaches, and clustering within a picosecond or even femtosecond range has not been realized. [ 10–13,16,17 ]…”