Extraordinary stability of anisotropic femtosecond direct-written structures embedded in silica glass

被引：118

作者：

Bricchi, E ^{[1
]}

Kazansky, PG ^{[1
]}

机构：

[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 11期

关键词：

D O I：

10.1063/1.2185587

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter we report the different response to temperature displayed by isotropic femtosecond written structures (type I_fs), and anisotropic ones (type II_fs), which are characterized by the presence of a self-assembled subwavelength periodic structure within the irradiated volume. We observe that the anisotropic structures display an extraordinary annealing behavior, namely, their photoinduced change in refractive index increases with the annealing temperature. We explain our experimental results with a theoretical model.

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页数：3

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