Li Hui, Gong Xiaochun, Ni Hongcheng, Lu Peifen, Luo Xiao, Wen Jin, Yang Youjun, Qian Xuhong, Sun Zhenrong, Wu Jian
State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200241, China.
School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China.
J Phys Chem Lett. 2022 Jun 30;13(25):5881-5893. doi: 10.1021/acs.jpclett.2c01119. Epub 2022 Jun 22.
By precisely controlling the waveform of ultrashort laser fields, electronic and nuclear motions in molecules can be steered on extremely short time scales, even in the attosecond regime. This new research field, termed "optochemistry", presents the light field in the time-frequency domain and opens new avenues for tailoring molecular reactions beyond photochemistry. This Perspective summarizes the ultrafast laser techniques employed in recent years for manipulating the molecular reactions based on waveform control of intense ultrashort laser pulses, where the chemical reactions can take place in isolated molecules, clusters, and various nanosystems. The underlying mechanisms for the coherent control of molecular dynamics are explicitly explored. Challenges and opportunities coexist in the field of optochemistry. Advanced technologies and theoretical modeling are still being pursued, with great prospects for controlling chemical reactions with unprecedented spatiotemporal precision.
通过精确控制超短激光场的波形，即使在阿秒时间尺度下，分子中的电子和核运动也能在极短时间内得到调控。这个被称为“光化学”的新研究领域，在时频域中展现了光场，并为超越光化学的分子反应剪裁开辟了新途径。本综述总结了近年来基于强超短激光脉冲的波形控制来操纵分子反应所采用的超快激光技术，其中化学反应可以在孤立分子、团簇以及各种纳米系统中发生。文中还明确探讨了分子动力学相干控制的潜在机制。在光化学领域，挑战与机遇并存。先进技术和理论建模仍在不断探索中，有望以前所未有的时空精度控制化学反应。
