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介绍了一种利用声光相互作用对超短脉冲激光系统中的增益窄化和群延迟色散等进行补偿的装置———可编程声光色散滤波器(AOPDF)。其基本思想最初由法国的P.Tournois提出,后来开发了商业化的产品Dazzler装置,并在世界其他国家的超短脉冲激光装置中得到了广泛的应用。本文从AOPDF的基本原理以及耦合波方程出发,旨在向读者全面地介绍AOPDF中声光相互作用的过程以及对群延迟的控制。
A device that uses acousto-optic interaction to compensate for narrowing of gain and group delay dispersion in ultrashort pulsed laser systems, such as programmable acousto-optic dispersive filter (AOPDF), is introduced. The basic idea was first proposed by P. Tournois in France. Later on, a commercialized Dazzler device was developed and used widely in the world of ultra-short pulse laser devices in other countries. Starting from the basic principle of AOPDF and the coupled wave equation, this paper aims to provide readers with a comprehensive introduction of the process of acousto-optic interaction in AOPDF and the control of group delay.