中国物理B ›› 2008, Vol. 17 ›› Issue (1): 199-204.doi: 10.1088/1674-1056/17/1/035

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The relation between composition in laser absorption region and ambient pressure

朱金荣1, 杨波2, 沈中华2, 陆建2, 倪晓武2, 杨雁南3   

  1. (1)College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China\;Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China; (2)Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China; (3)Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China\;College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • 出版日期:2008-01-20 发布日期:2008-01-20
  • 基金资助:
    Project supported by the National Science Foundation of China (Grant Nos 60578015 and 60208004) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No 20050288025).

The relation between composition in laser absorption region and ambient pressure

Yang Bo(杨波)b), Zhu Jin-Rong(朱金荣)a)b), Yang Yan-Nan(杨雁南)b)c), Shen Zhong-Hua(沈中华)b), Lu Jian(陆建)b), and Ni Xiao-Wu(倪晓武)b)†   

  1. a College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China; b Department of Applied Physics, Nanjing University of Science and Technology, Nanjing 210094, China; c College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  • Online:2008-01-20 Published:2008-01-20
  • Supported by:
    Project supported by the National Science Foundation of China (Grant Nos 60578015 and 60208004) and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No 20050288025).

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摘要： In this paper, the compositions in a laser absorption region can be determined from the experiment of laser impulse coupling. When the ambient pressure varies from 9325 to 33325Pa, the compositions are vapour and plasma; while from 35325 to 101325Pa, they are ambient air and plasma. By analysing the relation between the degree of compression and the ambient pressure, the compositions can be determined and the variation of plasma can be explained.

关键词: laser technology, laser absorption region, ambient pressure, impulse coupling coefficient

Abstract: In this paper, the compositions in a laser absorption region can be determined from the experiment of laser impulse coupling. When the ambient pressure varies from 9325 to 33325Pa, the compositions are vapour and plasma; while from 35325 to 101325Pa, they are ambient air and plasma. By analysing the relation between the degree of compression and the ambient pressure, the compositions can be determined and the variation of plasma can be explained.

Key words: laser technology, laser absorption region, ambient pressure, impulse coupling coefficient

中图分类号:  (Laser light absorption in plasmas (collisional, parametric, etc.))

  • 52.38.Dx
42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)