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

doi:10.1088/1674-1056/20/10/104205

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.

Keywords: terahertz transient thermal effect finite element method

Received: 31 March 2011
Revised: 18 April 2011
Accepted manuscript online:

PACS:	42.62.-b	(Laser applications)
	02.70.Dh	(Finite-element and Galerkin methods)
	44.10.+i	(Heat conduction)

Fund: 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).

Cite this article:

Lü Ying-Jin(吕英进), Xu De-Gang(徐德刚), Liu Peng-Xiang(刘鹏翔), Lü Da(吕达), Wen Qi-Ye(文岐业), Zhang Huai-Wu(张怀武), and Yao Jian-Quan(姚建铨) Simulation of continuous terahertz wave transient state thermal effects on static water 2011 Chin. Phys. B 20 104205

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

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