飞秒激光相干场诱导材料功能微结构

飞秒激光在整个脉冲宽度内具有极好的相干性，因而当从同一光束分出的两束或两束以上的光束时间与空间上实现相互叠加时将会形成强度周期性调制的电磁场．这种周期调制的电磁场与材料产生相互作用，能诱导出相应的周期微结构．最近通过两束或两束以上飞秒激光干涉诱导功能微结构得到了广泛研究．文章综合了国内外飞秒激光研究小组在干涉诱导微结构方面的一些最新成果以及作者在这方面开展的工作，对飞秒激光干涉技术的原理及其在诱导微结构方面的应用进行了介绍．

Femtosecond laser induced functional microstructures

Femtosecond (fs) laser pulses have good coherence over the whole pulse duration. A oeriodically modulated light intensity distribution can be generated when two or more beams split from one beam overlap with each other. A periodically modulated microstructure can thus be obtained if the modulated light intensity distribution is transferred to a photoreactive material. This has recently been extensively investigated for the fabrication of functional microstructures by fs laser interference of two or more beams. We present some state-of-the-art fs laser interference induced functional microstructures and some of our research results. The principle of fs laser interference and some applications are also discussed.