一、引言 近十多年来,激光微束照射技术的发展,及其在生物、基础医学等研究工作上所取得的成果表明,它已成为这些研究工作中一个新的有力手段。到目前为止,国内外的微束仪全部是利用短焦距透镜系统进行激光聚焦,所以不能在“厚”材料上取得较均匀的微孔。同时,它们大部分又是将观测系统与聚焦系统采用同一个高倍显微物镜,因此,其操作距离都是很短的。 I. INTRODUCTION In recent ten years, the development of laser microbeam irradiation technology and its achievements in research of biology and basic medicine have shown that it has become a new and powerful tool in these research work. So far, the domestic and foreign micro-beam all use the short focal length lens system for laser focusing, so can not get more uniform micropores on the “thick” material. At the same time, most of them use the same high magnification microscope as the observation system and the focusing system, so the operating distance is very short.