| 多光子过程和自发辐射对激光诱导自电离的影响 |
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| 引用本文： | 李世芳,林福成. 多光子过程和自发辐射对激光诱导自电离的影响[J]. 光学学报, 1987, 0(8) |
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| 作者姓名： | 李世芳 林福成 |
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| 作者单位： | 中国科学院上海光学精密机械研究所(李世芳)，中国科学院上海光学精密机械研究所(林福成) |
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| 摘 要： | 利用反作用算符的方法,研究了一个单模激光场将原子从束缚能级激发到自电离能级的过程中,双光子过程和自发辐射过程的影响。研究结果表明:自发辐射对这种光电离过程的影响一般情况下是很小的,但光子能谱特性十分明确地表明,辐射主要来源于由态共振加强的喇曼过程;并显示了激光诱导自电离过程中的缀饰(Dressed)原子图像;双光子过程将使光电子能谱和光诱导自电离过程变得非常复杂,单光子和双光子过程所产生的光电子能谱,都具有多极大值结构。
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| 关 键 词： | 激光诱导自电离 |
Effect of multiphoton process and spontaneous emission on laser induced autoionization |
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| LI SHIFANG AND LIN FUCHENG. Effect of multiphoton process and spontaneous emission on laser induced autoionization[J]. Acta Optica Sinica, 1987, 0(8) |
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| Authors: | LI SHIFANG AND LIN FUCHENG |
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| Abstract: | The atoms at autoionization state can be excited to higher continuum state, as well as transit to bond states by spontaneous emission a photon in laser induced autoionization. The effect of these processes on the laser induced autoionization process has been investigated by means of using the reaction matrix. The effect of spontaneous emission process is small in general case, but its spectrum shows that the emission is contributed mainly from the spontaneous Raman scattering enhanced by the cutoioni-zation state, and the Dressed atom picture was shown clearly. The multiphoton process makes the photoelectron spectra and laser induced autoionization process very complicated. For example, the photoelectron spectra of one and two-photon process have multi-maxium structure. |
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| Keywords: | laser induced autoionization. |
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