中国物理B ›› 2011, Vol. 20 ›› Issue (10): 104205-104205.doi: 10.1088/1674-1056/20/10/104205

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Simulation of continuous terahertz wave transient state thermal effects on static water

吕英进1, 徐德刚1, 刘鹏翔1, 吕达1, 姚建铨1, 文岐业2, 张怀武2   

  1. (1)College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China; Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin 300072, China; (2)State Key Laboratory of Electronic Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • 收稿日期:2011-03-31 修回日期:2011-04-18 出版日期:2011-10-15 发布日期:2011-10-15
  • 基金资助:
    Project supported by the National Basic Research Program of China (Grant Nos. 2007CB310403 and 2007CB310407) and the National Natural Science Foundation of China (Grant No. 60801017).

Simulation of continuous terahertz wave transient state thermal effects on static water

Lü Ying-Jin(吕英进)a)b), Xu De-Gang(徐德刚) a)b)†, Liu Peng-Xiang(刘鹏翔)a)b), Lü Da(吕达)a)b), Wen Qi-Ye(文岐业)c), Zhang Huai-Wu(张怀武)c), and Yao Jian-Quan(姚建铨)a)b)   

  1. a College of Precision Instruments and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China; b Key Laboratory of Opto-electronics Information Technology (Tianjin University), Ministry of Education, Tianjin 300072, China; c State Key Laboratory of Electronic Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2011-03-31 Revised:2011-04-18 Online:2011-10-15 Published:2011-10-15
  • Supported by:
    Project supported by the National Basic Research Program of China (Grant Nos. 2007CB310403 and 2007CB310407) and the National Natural Science Foundation of China (Grant No. 60801017).

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摘要： We report a numerical simulation of continuous terahertz beam induced transient thermal effects on static water. The terahertz wave used in this paper has a Gaussian beam profile. Based on the transient heat conduction equation, the finite element method (FEM) is utilized to calculate the temperature distribution. The simulation results show the dynamic process of temperature change in water during terahertz irradiation. After about 300 s, the temperature reaches a steady state with a water layer thickness of 5 mm and a beam radius of 0.25 mm. The highest temperature increase is 7 K/mW approximately. This work motivates further study on the interaction between terahertz wave and bio-tissue, which has a high water content.

关键词: terahertz, transient thermal effect, finite element method

Abstract: We report a numerical simulation of continuous terahertz beam induced transient thermal effects on static water. The terahertz wave used in this paper has a Gaussian beam profile. Based on the transient heat conduction equation, the finite element method (FEM) is utilized to calculate the temperature distribution. The simulation results show the dynamic process of temperature change in water during terahertz irradiation. After about 300 s, the temperature reaches a steady state with a water layer thickness of 5 mm and a beam radius of 0.25 mm. The highest temperature increase is 7 K/mW approximately. This work motivates further study on the interaction between terahertz wave and bio-tissue, which has a high water content.

Key words: terahertz, transient thermal effect, finite element method

中图分类号:  (Laser applications)

  • 42.62.-b
02.70.Dh (Finite-element and Galerkin methods) 44.10.+i (Heat conduction)