Space-selective enhancement of blue photoluminescence in gallium germanosilicate glass through laser-induced nanostructuring

Direct Laser Writing of LaBGeO5 Crystal-in-Glass Waveguide Enabling Frequency Conversion

“…Controllable space-selective precipitation of microcrystals is a promising type of laser-induced modification of glasses. Methods of direct laser writing of 2D/3D amorphous or crystalline architectures (dots, lines, arrays of crystals, single crystal-like waveguides of a complicated shape) possessing functional properties such as waveguide ones, second-harmonic generation (SHG), and luminescence have been recently developed. − Space-selective growth of lines consisting of nonlinear optical crystals in glasses was widely studied by T. Komatsu and co-workers − who developed techniques of laser-induced crystallization of glasses doped with rare-earth or transition metal ions by the continuous wave (cw) laser beam. In addition to surface glass crystallization they have recently succeeded in cw laser patterning of highly orientated β-BaB 2 O 4 crystals inside the glass fiber …”

Responsive charge transport in wide-band-gap oxide films of nanostructured amorphous alkali-gallium-germanosilicate

“…The segregation of HCl-resistant alkali-free SiO2 or GeO2 is instead less likely and in countertendency with the number of data on bulk materials, where Ga-oxide nano-segregates in silicate and germanate glasses. [16][17][18][19][20][21][22][23][24][25] In Fig. 3, we report the results of SEM analysis.…”

“…In these Gacontaining mixed oxides, in fact, the Ga-oxide component has the potential of providing easy-to-fabricate glass-based planar systems with the peculiar optical and electrical properties of Ga-oxide nanophases, [10][11][12][13][14][15] including light-emitting features demonstrated during the past few years in nanostructured bulk glasses. [16][17][18][19][20][21][22] However, the detailed analysis of Ga oxide nanophases in mixed oxides has been mainly studied in bulk glass, where nanophases nucleate and grow by thermally controlled phase separation. [23][24][25] Instead, no data are available on analogous oxidein-oxide compositions in planar geometry with nanosized thickness.…”

Composition‐dependent structural role of lead in aluminoborate and galloborate glasses: A solid‐state NMR study

“…In the pursuit of developing borate-based glassy systems and understanding their structural attributes, it is valuable to also consider the applications of Ga-bearing glasses in the areas of optical materials [33][34][35] and therapeutic applications, [36][37][38] and to design novel Ga-bearing borate glasses. Gallium, a main-group element which often functions very similarly to Al, is considered an intermediate glass former due to its ability to participate both in building the structural framework of the glass network by adopting tetrahedral geometry, and existing in higher coordination environments.…”