Kazuo Arai

TL;DR: In this paper, the effect of co-dopant oxide on the properties of SiO2 glass for a glass laser host was studied. And the effects of the Al dopant on the density and Raman spectra were also studied to obtain structural information.

TL;DR: The effects of ArF excimer laser irradiation on dehydrated high-purity silica glass were investigated on both the optical-absorption bands due to oxygen-deficient centers (ODC) and the formation of E- center density, suggesting that there exist two types of ODC: ODC(I), which is responsible for the 7.6-eV band, and ODC (II), for the 5.0- eV band.

TL;DR: In this article, the photochemical hole in amorphous silica doped with organic dye molecules, 1,4−dihydroxyanthraquinone, was observed and compared with those in the alcoholic organic glass.

TL;DR: In this paper, the compatibility of electronic and ionic conduction processes in glasses such as Ag-doped As-Se glasses and Bi2O3B 2O3 glass was discussed from these aspects.

TL;DR: In this paper, the authors investigated defect formation in dehydrated silica glasses using various excimer lasers with different energies and found that the E' center probably originated from oxygen-deficient centers.