Two-photon excited microscale colour centre patterns in Ag-activated phosphate glass written using a focused proton beam. (28th November 2017)

• Record Type: Journal Article
• Authors: Kurobori, Toshio; Kada, Wataru; Shirao, Taichi; Satoh, Takahiro
• Is Part Of: Japanese journal of applied physics. Volume 57:Number 2(2018)Supplement 2
• Publication Date: 2017-11-28
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/JJAP.57.02CC01
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: We report a demonstration of microscale patterns in Ag-activated phosphate glass fabricated using a focused proton beam with an energy range of 1–3 MeV. Various microscale patterns are based on blue and orange radiophotoluminescent (RPL) centres. Two- and three-dimensional (2D and 3D) microstructures are visualised by combining two-photon confocal microscopy with femtosecond (fs) laser pulses generated from a mode-locked Ti:sapphire laser operating at 700 nm. The reconstructed images are analytically evaluated using lateral/axial dose mapping and RPL spectra. In addition, the advantages of two-photon excitation applied to Ag-activated phosphate glass are discussed, and this method is compared with single-photon excitation.