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arXiv physics/0509188physics.optics
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超短脉冲laser在金属薄膜中的非线性吸收

Nonlinear absorption of ultrashort laser pulses in thin metal films

Giovanni Manfredi, Paul-Antoine Hervieux

摘要:

对金属薄膜中的超快电子动力学进行了自洽模拟。观察到的非线性振荡的制度,这对应于弹道电子反弹来回对膜表面。当振荡激光场被施加到薄膜上时,场能量被电子气部分吸收。当外场的周期与非线性振荡的周期相匹配时,发生最大吸收,对于钠膜,非线性振荡的周期位于红外范围内。可能的实验实施进行了讨论。

英文摘要:

Self-consistent simulations of the ultrafast electron dynamics in thin metal films are performed. A regime of nonlinear oscillations is observed, which corresponds to ballistic electrons bouncing back and forth against the film surfaces. When an oscillatory laser field is applied to the film, the field energy is partially absorbed by the electron gas. Maximum absorption occurs when the period of the external field matches the period of the nonlinear oscillations, which, for sodium films, lies in the infrared range. Possible experimental implementations are discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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