Tunable rectangular array illuminator in periodically poled LiNb03 crystal

An electro-optic tunable rectangular array illuminator in one-dimensional periodically poled LiNbO3 （PPLN） crystal is presented experimentally which result is in good agreement with results from simu- lation. The illuminator is formed based on the Talbot self-imaging effect by applying an electric field on PPLN. The intensi~.y distribution of rectangular array could be precisely modulated. Compared with other array illuminators, this tunable illuminator uses a lower voltage and could get a more concentrated intensity distribution. The influence of the incident angle to the self-imaging patterns is studied for the first time.     

我国旅行社顾客忠诚培育问题分析

在激烈的市场竞争环境中,作为我国旅游业代表性行业的旅行社业已经进入微利时代。然而培育顾客忠诚却成为提高旅行社的赢利水平,实现旅行社的可持续发展的有效手段。本文给出了旅行社顾客忠诚培育的努力方向,以期我国的旅行社业能够健康持续发展。