Measurement of the phase of few-cycle laser pulses
Measurement of the phase of few-cycle laser pulses
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DOI：
10.1080/09500340412331283651
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发表时间：
2005-01
影响因子：
1.3
通讯作者：
G. G. Paulus-G.;F. Lindner;H. Walther;A. Baltuska;E. Goulielmakis;M. Lezius;F. Krausz
中科院分区：
文献类型：
--
作者：
G. G. Paulus-G.;F. Lindner;H. Walther;A. Baltuska;E. Goulielmakis;M. Lezius;F. Krausz
阿秒科学可以利用由两个或更少的光周期组成的强激光脉冲（少周期脉冲）的巨大优势。场的时间变化直接决定强场相互作用，因此取决于脉冲幅度的最大值是否与波周期的最大值一致，即取决于场相对于脉冲包络的相位。结果表明，光致电离原子的电子发射方向可以通过改变光场的相位来控制，从而为精确确定光致电离原子的电子发射方向提供了一种工具。讨论了强场光电离中不同的相位相关效应及其对相位测量的适用性，以及f-to-2f方案的局限性。
Attosecond science can take enormous advantage of intense laser pulses consisting of two optical cycles or less (few-cycle pulses). The temporal variation of the field, which directly governs strong-field interactions, therefore depends on whether the maximum of the pulse amplitude coincides with that of the wave cycle or not, i.e. on the phase of the field with respect to the pulse envelope. It is demonstrated that the direction of electron emission from photoionized atoms can be controlled by varying the phase of the field, providing a tool for its accurate determination. Different phase-dependent effects in strong-field photoionization and their suitability for phase measurement are discussed as well as the limitations of the f-to-2f scheme.