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Quantitative deviation of the two-photon absorption coefficient based on three laser pulse models

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【作者】 赵培德张勇包文霞张忠亚汪大云刘铭张志东

【Author】 Peide Zhao Yong Zhang Wenxia Bao Zhongya Zhang Dayun Wang Ming Liu and Zhidong Zhang School of Science,Hebei University of Technology,Tianjin 300130,China

【机构】 School of Science,Hebei University of Technology

【摘要】 <正>The pulse profile influence of excitation light on the two-photon absorption coefficientβis theoretically and numerically studied.Based on Gaussian spatial and temporal laser,we obtain an expansion formula of energy transmission.As compared with a plain beam and a pulse beam that is rectangular in time but Gaussian in space,the relative deviations ofβturn out to be about 214%and 47%,respectively.These differences indicate that a smallerβmay be obtained than the real one in usual nonlinear transmission. Our result suggests that by taking real pulse profile into account,a more exactβcan be derived in energy transmission measurement.

【Abstract】 The pulse profile influence of excitation light on the two-photon absorption coefficient β is theoretically and numerically studied.Based on Gaussian spatial and temporal laser,we obtain an expansion formula of energy transmission.As compared with a plain beam and a pulse beam that is rectangular in time but Gaussian in space,the relative deviations ofβturn out to be about 214%and 47%,respectively.These differences indicate that a smallerβmay be obtained than the real one in usual nonlinear transmission. Our result suggests that by taking real pulse profile into account,a more exactβcan be derived in energy transmission measurement.

【关键词】 photondeviationusualnumericallyexacttransmittedassumedplaininitiallyrectangular
【基金】 supported by the Key Subject Construction Project of Hebei Provincial University and the Doctoral Fund of Hebei University of Technology
  • 【文献出处】 Chinese Optics Letters ,中国光学快报(英文版) , 编辑部邮箱 ,2010年01期
  • 【分类号】O437
  • 【被引频次】2
  • 【下载频次】54
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