Optical second-order nonlinearity of poled borosilicate glass containing CuCl

Abstract

The effect of surface etching on second-harmonic ͑SH͒ intensity and Maker fringe pattern have been examined for poled borosilicate glasses containing CuCl. A drastic decrease in the SH intensity was observed with anode-side surface etching, while such a decrease did not appear when the cathode-side surface etching was carried out. However, after 20 m etching of the anode-side surface, a decrease in SH intensity with the cathode-side etching was observed. For some samples, the theoretical Maker fringe pattern derived on the assumption that the SH wave is generated from a thin layer near the anode-side surface is in good agreement with the experimental one. On the other hand, other samples show oscillation in the fringe, which originates from the interference of SH waves generated from both surfaces. These results suggest that the nonlinear layer is present at both surfaces, although it is much weaker near the cathode. It is thought that the origin of the nonlinearity is attributable to migration of Cu ϩ and Cl Ϫ .

Distributions of copper and CuBr in CuBr nanocrystallite-dispersed glasses prepared by copper staining

“…Copper(I) halide nanocrystallite-dispersed glasses have received much attention as semiconductors over the past decade because of their interesting quantum size effects and nonlinear optical properties [1][2][3][4][5][6][7][8][9][10][11]. Various methods of preparing these materials have been reported: a conventional anneal of glasses doped with copper and halide ions resulting in the precipitation of copper(I) halide nanocrystallites [3], a sol-gel method [12][13][14][15][16], a sputtering method [17][18][19][20], and an ion-implantation method [21][22][23][24][25].…”