中国物理B ›› 2015, Vol. 24 ›› Issue (2): 24220-024220.doi: 10.1088/1674-1056/24/2/024220

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

ATR-FTIR spectroscopic studies on density changes of fused silica induced by localized CO2 laser treatment

张传超a, 张丽娟a, 廖威a, 晏中华b, 陈静a, 蒋一岚a, 王海军a, 栾晓雨a, 叶亚云a, 郑万国a, 袁晓东a   

  1. a Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;
    b School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2014-07-15 修回日期:2014-09-12 出版日期:2015-02-05 发布日期:2015-02-05

ATR-FTIR spectroscopic studies on density changes of fused silica induced by localized CO2 laser treatment

Zhang Chuan-Chao (张传超)a, Zhang Li-Juan (张丽娟)a, Liao Wei (廖威)a, Yan Zhong-Hua (晏中华)b, Chen Jing (陈静)a, Jiang Yi-Lan (蒋一岚)a, Wang Hai-Jun (王海军)a, Luan Xiao-Yu (栾晓雨)a, Ye Ya-Yun (叶亚云)a, Zheng Wan-Guo (郑万国)a, Yuan Xiao-Dong (袁晓东)a   

  1. a Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;
    b School of Physical Electronics, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2014-07-15 Revised:2014-09-12 Online:2015-02-05 Published:2015-02-05
  • Contact: Chen Jing, Ye Ya-Yun E-mail:chenjing_19901102@163.com;yeyayun8617@163.com

摘要:

The surface density changes of the central region of the sites treated by using the CO2 laser-based non-evaporative damage mitigation for fused silica are investigated by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). The ATR-FTIR peak shifts of the treated sites of fused silica are monitored to determine the changes of the corresponding density. For the quenching treated sites, the surface density is increased by (0.24± 0.01)% compared with the initial density but the laser annealing by the exposure of a power ramp down after damage mitigation effectively suppresses the structural changes of treated sites, which could reduce the increase of the corresponding density to (0.08± 0.01)%. The results provide sufficient evidence that the laser annealing by a power ramp down after damage mitigation has a positive effect on the control of the structural change induced by CO2 laser-based damage mitigation.

关键词: fused silica, damage mitigation, ATR-FTIR, laser annealing

Abstract:

The surface density changes of the central region of the sites treated by using the CO2 laser-based non-evaporative damage mitigation for fused silica are investigated by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). The ATR-FTIR peak shifts of the treated sites of fused silica are monitored to determine the changes of the corresponding density. For the quenching treated sites, the surface density is increased by (0.24± 0.01)% compared with the initial density but the laser annealing by the exposure of a power ramp down after damage mitigation effectively suppresses the structural changes of treated sites, which could reduce the increase of the corresponding density to (0.08± 0.01)%. The results provide sufficient evidence that the laser annealing by a power ramp down after damage mitigation has a positive effect on the control of the structural change induced by CO2 laser-based damage mitigation.

Key words: fused silica, damage mitigation, ATR-FTIR, laser annealing

中图分类号:  (Glasses, quartz)

  • 42.70.Ce
61.80.-x (Physical radiation effects, radiation damage) 63.50.-x (Vibrational states in disordered systems) 78.20.-e (Optical properties of bulk materials and thin films)