太赫兹波相干探测的物理机制研究  

Physical mechanism of terahertz wave coherent sensing

作　　者：戴厚梅[1] 李新 Dai Houmei;Li Xin(Hubei Province Key Laboratory of Systems Science in Metallurgical Process,Wuhan University of Science and Technology,Wuhan 430065,Chin)

机构地区：[1]武汉科技大学冶金工业过程系统科学湖北省重点实验室,湖北武汉430065

出　　处：《武汉科技大学学报》2018年第4期317-320,共4页Journal of Wuhan University of Science and Technology

基　　金：国家自然科学基金资助项目(11447128);湖北省教育厅科学技术研究项目(B2015351)

摘　　要：通过探测经周期量级激光脉冲激励所产生的气体等离子体荧光辐射增强现象,研究了太赫兹波相干探测的物理过程。结果表明,太赫兹场同周期量级激光脉冲载波-包络相位改变π前后相应的荧光辐射增强量的差值成正比,最佳探测条件可表达为ETHz∝ΔI(φ=π)-ΔI(φ=0)。The process of terahertz coherent sensing by detecting the fluorescence emission enhancement from gas plasma excited by few-cycle laser pulses was studied.The results show that the terahertz waveform can be recovered by taking the difference between the enhancements when the carrier envelope phase for the exciting pulse varies byπ,and the optimal expression of sensing condition is ETHz∝ΔI（φ=π）-ΔI（φ=0）.

关 键 词：太赫兹波 相干探测 荧光辐射 周期量级激光脉冲 载波包络相位 

分 类 号：O137[理学—数学]