Effect of Lorentz local field correction on propagation of ultrashort laser pulse in one-dimensional para-nitroaniline (PNA) molecules

doi:10.1088/1674-1056/20/4/044205

Abstract This paper investigates the effect of Lorentz local field correction (LFC) on the propagation of ultrashort laser pulses in a para-nitroaniline molecular medium under resonant and nonresonant conditions by solving numerically the full-wave Maxwell-Bloch equations beyond slowly-varying envelope approximation and rotating-wave approximation. The effect of the LFC is considerably obvious when pulses with large areas propagate in the dense molecular medium. In the case of resonance, the group velocity of the sub-pulses split from the incident pulse along propagation is severely decreased by the LFC, especially for the latest sub-pulse. However, in the case of nonresonance, the influence of the LFC on the temporal evolution of the pulse is less obvious and lacks homogeneity with an increase in incident pulse area, propagation distance and molecular density.

Keywords: Lorentz local field correction ultra-short laser pulse para-nitroaniline molecule Maxwell–Bloch equations

Received: 29 July 2010
Revised: 16 September 2010
Accepted manuscript online:

PACS:	42.65.-k	(Nonlinear optics)
	31.15.A-	(Ab initio calculations)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974121), the National Basic Research Program of China (Grant No. 2006CB806000) and the Open Fund of the State Key Laboratory of High Field Laser Physics (Shanghai Institute of Optics and Fine Mechanics).

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Zhou Yong(周勇),Miao Quan(苗泉),and Wang Chuan-Kui(王传奎) Effect of Lorentz local field correction on propagation of ultrashort laser pulse in one-dimensional para-nitroaniline (PNA) molecules 2011 Chin. Phys. B 20 044205

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Effect of Lorentz local field correction on propagation of ultrashort laser pulse in one-dimensional para-nitroaniline (PNA) molecules

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