Formation of photonic structures in Sm~(2+)-doped aluminosilicate glasses through phase separation

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外文摘要：Sm~(2+)-doped Al_2O_3-SiO_2 glasses with three-dimensionally interconnected macroporous morphology have been prepared via the alkoxy-derived sol-gel process containing poly (ethylene oxide) and SmCl_3·6H_2O。 The macro-porous morphology is obtained by concurrently inducing the phase separation and sol-gel transition。 Using a visible laser with the wavelength of 488 nm， the valence state of Sm~(2+) has been manipulated spatially。 When the photoionization of Sm~(2+) is combined with multiple light scattering in the porous glasses， holes are burned in wave-vector domain。 The hole profile can be controlled by adjusting the macroporous morphology。

外文关键词：

phase separationmacroporesalminosilicate glassessm~(2+)interferencemultiply scattered light

作者：

Koji Fujita、Shunsuke Murai、Kazuki Nakanishi、Kazuyuki Hirao

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作者单位：

Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan

会议名称：

Conference on Micromachining Technology for Micro-Optics and Nano-Optics III; 20050125-27; San Jose,CA(US)

会议地点：

San Jose,CA(US)

会议母体文献：

Micromachining Technology for Micro-Optics and Nano-Optics III

页码：

P.261-268

出版时间：

2005