Details

Autor(en) / Beteiligte

• Lipatiev, Alexey S.
• Fedotov, Sergey S.
• Lipateva, Tatiana O.
• Mikhailov, Yuriy V.
• Stopkin, Semyon I.
• Lotarev, Sergey V.
• Ivanov, Pavel I.
• Sigaev, Vladimir N.

Titel

Silver-doped porous glass for advanced optical data storage based on ultrafast laser nanostructuring

Ist Teil von

• Microporous and mesoporous materials, 2024-04, Vol.369, p.113036, Article 113036

Ort / Verlag

Elsevier Inc

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• In this study, we proposed silver-doped nanoporous glass as an advanced medium for archival optical data storage based on ultrafast laser writing. Mesoporous structure of synthesized glass with ink-bottle nanopores allows for efficient doping of durable high-silica matrix with silver. An effect of laser writing conditions on luminescence activity and form birefringence of laser-induced nanostructured patterns inside glass is investigated. A single laser pulse has been shown to produce a submicron pattern with Agn nanoclusters which allows encoding one bit of information in a well-detectable luminescence signal. Voxels with silver nanoclusters can be erased by the heat treatment at 300 °C and re-written by laser pulses. This opens a way to high-speed, ultra-dense and rewritable data storage. At the same time, in addition to the luminescence activity, a few laser pulses can induce form birefringence. The optical retardance and slow axis orientation of birefringent voxels can be controlled by the number of laser pulses or pulse energy and laser beam polarization, which expand the capacity of data encoding by several bits per dot. A reliable data readout with an accuracy over 99.8% has been demonstrated. The obtained results are significant for the development of long-term optical data storage compacted with multilevel encoding and rewriting ability. [Display omitted] •Glass having mesoporous structure was doped with silver for advanced optical memory by laser nanostructuring.•Silver-doped nanoporous glass enables data encoding both in luminescent and birefringent properties of laser-written voxels.•Single-pulse laser writing of information and data readout accuracy over 99% were demonstrated.