Institute of Photonics and Nanotechnologies (IFN)-Consiglio Nazionale delle Ricerche (CNR), Piazza Leonardo da Vinci 32, 20133 Milano, Italy.
Departamento de Química, Modulo 13, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain.
Science. 2014 Oct 17;346(6207):336-9. doi: 10.1126/science.1254061.
In the past decade, attosecond technology has opened up the investigation of ultrafast electronic processes in atoms, simple molecules, and solids. Here, we report the application of isolated attosecond pulses to prompt ionization of the amino acid phenylalanine and the subsequent detection of ultrafast dynamics on a sub-4.5-femtosecond temporal scale, which is shorter than the vibrational response of the molecule. The ability to initiate and observe such electronic dynamics in polyatomic molecules represents a crucial step forward in attosecond science, which is progressively moving toward the investigation of more and more complex systems.
在过去的十年中，阿秒技术已经开启了对原子、简单分子和固体中超快电子过程的研究。在这里，我们报告了孤立阿秒脉冲在促使氨基酸苯丙氨酸电离以及随后在亚 4.5 飞秒时间尺度上探测超快动力学方面的应用，该时间尺度比分子的振动响应还要短。在多原子分子中引发和观察这种电子动力学的能力是阿秒科学向前迈出的关键一步，该科学正在逐步向更复杂系统的研究推进。
