Using the elementary theory of the acousto-optic nonlinear interaction,an empirical formula is developed for the diffracted light in terms of the acoustic power. Using this formula, closed-form expression, in terms of the modified Bessel functions, are obtained for the diffracted-light components resulting from interaction with a multisinusoidal acoustic wave.

This paper presents a path-planning method of laser tool in 5-axis laser quenching for complicated surface. In this method, two main factors are concerned which include: (1) Planning the CC paths on the complicated surface quenched to maintaining laser tool scanning speed constant easily in quenching process; (2) Diminishing the chord deviation between the actual value and its approximation by choosing different interpolation methods according to the curvature radius of CC points which is being quenched. This method effectively ensures the part’s laser quenching quality.