分子在真空紫外区的相干辐射光谱及转动温度的测量

Molecular Coherent Radiation in VUV/XUV Regions and the Determination of Rotational Temperature of Molecule

本文报道的是作者利用分子作为介质 ,通过非线性光学过程 (四波和频 ,三次谐波 )在真空紫外波段产生宽带可调谐相干光的理论和实验研究及其结果 ,实验产生的宽波段可调谐激光输出为建成完备的小型真空紫外激光光源奠定了基础。此文还报道了作者用该光源在XUV波段成功测量分子转动温度的方法和结果。

The investigation of spectroscopy of vacuum ultraviolet (VUV, 100-200 nm) and extreme ultraviolet (XUV, 10-100 nm) regions has attracted the attention of many researchers in recent years because of its promising applications in such areas as spectroscopy of highly excited states of atoms and molecules, life science, plasma physics and material science. In this paper we report the study of molecular coherent spectrum in the VUV and XUV regions through nonlinear optical processes and the determination of the rotational temperature of molecules. Because molecular gases have abundant energy levels, it can provide resonant levels to enhance the generated radiation and a wide tunibility of the spectrum in VUV and XUV regions. The determination of the rotational temperature of molecules will be very useful for the study of molecular spectroscopy and the nonlinear optical process in VUV/XUV regions.