| 纳秒激光烧蚀光学玻璃的等离子体发射光谱特性 |
| |
| 引用本文： | 高勋,宋晓伟,郭凯敏,李海军,林景全. 纳秒激光烧蚀光学玻璃的等离子体发射光谱特性[J]. 中国激光, 2011, 0(3) |
| |
| 作者姓名： | 高勋 宋晓伟 郭凯敏 李海军 林景全 |
| |
| 作者单位： | 长春理工大学理学院;包头师范学院物理科学与技术学院; |
| |
| 基金项目： | 国家自然科学基金(60978014); 吉林省科技厅基金(20090523,20100168); 吉林省教育厅基金([2008]296,297)资助课题 |
| |
| 摘 要： | 对波长355 nm,脉宽5 ns的激光脉冲烧蚀空气中光学玻璃产生的等离子体发射光谱进行了时间和空间分辨研究。结果表明,在等离子体羽膨胀初期(小于200 ns时间范围内),等离子体发射光谱主要由连续光谱构成。此后,连续光谱强度逐渐减弱,线状光谱开始占主导地位。实验表明,由于存在等离子体屏蔽效应,脉冲能量大于35 mJ后,光谱线强度开始减弱。由时间分辨发射光谱发现,在等离子体羽膨胀过程中等离子体辐射波长(以Si I390.6 nm为例)存在红移现象,波长红移量随时间演化呈二次指数衰减。
|
| 关 键 词： | 光谱学 脉冲激光烧蚀 等离子体发射光谱 谱线强度 光谱红移 |
Optical Emission Spectral Characteristics of Glass Plasma Induced by Nanosecond Laser Pulse |
| |
| Gao Xun Song Xiaowei Guo Kaimin, Li Haijun Lin JingquanSchool of Science,Changchun University of Science , Technology,Changchun,Jilin ,ChinaSchool of Physical Science , Technology,Baotou Teachers College,Baotou,Nei Monggol ,China. Optical Emission Spectral Characteristics of Glass Plasma Induced by Nanosecond Laser Pulse[J]. Chinese Journal of Lasers, 2011, 0(3) |
| |
| Authors: | Gao Xun Song Xiaowei Guo Kaimin Li Haijun Lin JingquanSchool of Science Changchun University of Science Technology Changchun Jilin ChinaSchool of Physical Science Technology Baotou Teachers College Baotou Nei Monggol China |
| |
| Affiliation: | Gao Xun1 Song Xiaowei1 Guo Kaimin1,2 Li Haijun1 Lin Jingquan11School of Science,Changchun University of Science and Technology,Changchun,Jilin 130022,China2School of Physical Science and Technology,Baotou Teachers College,Baotou,Nei Monggol 014030,China |
| |
| Abstract: | The time and space resolved optical emission spectroscopy(OES) of optical glass plasma produced by nanosecond laser pulse(wavelength of 355 nm and pulse width of 5 ns) in air are investigated in this paper.Results show that OES is mainly consisted of continuous spectrum at the early stage of plasma expansion(within the first 200 ns) and the continuous spectrum weakens gradually while the line spectrum becomes dominating.The spectral intensity decreases when the ablated pulse energy increases more than 35 mJ... |
| |
| Keywords: | spectroscopy pulsed laser ablation plasma emission spectroscopy spectral line intensity spectral line red-shift |
| 本文献已被 CNKI 等数据库收录！ |
|
