飞秒激光照射银离子掺杂的 BK7光学玻璃的显微结构变化

doi:10.3724/SP.J.1077.2007.00807

无机材料学报

飞秒激光照射银离子掺杂的 BK7光学玻璃的显微结构变化

丁婷, 鲍家兴, 王丽, 周时凤, 邱建荣

(浙江大学硅材料国家重点实验室, 杭州 310027)

收稿日期:2006-09-13 修回日期:2006-11-01 出版日期:2007-09-20 网络出版日期:2007-09-20

Femtosecond Laser Induced Micro-structure Change in Ag⁺-doped BK7 Glass

DING Ting, BAO Jia-Xing, WANG Li, ZHOU Shi-Feng, QIU Jian-Rong

(State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, China)

Received:2006-09-13 Revised:2006-11-01 Published:2007-09-20 Online:2007-09-20

摘要/Abstract

摘要： 使用聚焦的800nm, 120fs, 1kHz的超短脉冲激光在掺Ag⁺的BK7玻璃内部空间选择性地写入了光栅结构, 然后将样品在不同温度下进行热处理. 吸收光谱表明, BK7玻璃在飞秒激光照射后产生了氧空位色心, 在575℃热处理后析出了银纳米颗粒. 光栅的衍射效率随热处理温度的升高而减小, 在575℃后又开始升高. 用光学显微镜观察了光栅的结构变化并对现象产生的机制进行了分析.

关键词: BK7玻璃, 飞秒激光, 照射, 衍射效率

Abstract: A grating structure was inscribed in a Ag⁺-doped BK7 glass sample by a focused femtosecond laser (800nm,120fs and 1kHz), and the glass sample was then annealed at different temperatures. Absorption spectra show that oxygen deficient centers are formed after the femtosecond laser irradiation and Ag nanoparticles are precipitated after annealing at 575℃. The diffraction efficiency of the inscribed grating decreases with further increase in annealing temperature above 575℃.The microstructure of the grating was also observed by an optical microscope and the mechanism of the observed phenomena was discussed.

Key words: femtosecond laser, irradiation, diffraction efficiency

中图分类号:

TQ 171

丁婷,鲍家兴,王丽,周时凤,邱建荣. 飞秒激光照射银离子掺杂的 BK7光学玻璃的显微结构变化[J]. 无机材料学报, DOI: 10.3724/SP.J.1077.2007.00807.

DING Ting,BAO Jia-Xing,WANG Li,ZHOU Shi-Feng,QIU Jian-Rong. Femtosecond Laser Induced Micro-structure Change in Ag⁺-doped BK7 Glass[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00807.

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飞秒激光照射银离子掺杂的 BK7光学玻璃的显微结构变化

Femtosecond Laser Induced Micro-structure Change in Ag⁺-doped BK7 Glass

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飞秒激光照射银离子掺杂的 BK7光学玻璃的显微结构变化

Femtosecond Laser Induced Micro-structure Change in Ag+-doped BK7 Glass

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Femtosecond Laser Induced Micro-structure Change in Ag⁺-doped BK7 Glass