飞秒物理、飞秒化学和飞秒生物学

FEMTOPHYSICS FEMTOCHEMISTRY AND FEMTOBIOLOGY

飞秒激光技术因其极高的时间分辨特性而被广泛应用于研究多种材料的超快过程 ,文章从几个侧面就飞秒技术在物理学、化学及生物学等方面的应用作了介绍 .在飞秒物理方面 ,介绍了飞秒技术在研究半导体量子阱材料、纳米材料的性质及高次谐波产生等方面的研究进展 ;飞秒化学则主要介绍了飞秒技术在研究光化学反应、光解离过程、键的断裂与结合以及相关的动力学过程的应用 ;在生物方面 ,则介绍利用飞秒技术研究光合作用中的能量传递过程、视觉系统中的光致异构化过程以及DNA中的电荷传递及质子传递等过程的研究现状 .

Femtosecond laser technology has attracted much attention due to its extremely high temporal resolution, which is essential to the research of ultrafast processes in various materials. We present an overview of recent progress in femtophysics, femtochemistry and femtobiology. In femtophysics, we focus on semiconductor quantum wells, nanometer materials and high harmonic generation. In femtochemistry, we describe the application of femtosecond lasers to studies of chemical reaction processes, isomerization, breaking and forming of the bond, and the dynamics of transition states. In femtobiology, much progress in understanding ultrafast processes in photosynthesis, vision and DNA has been achieved in recent years.