摘要
We present the results of research carried out for the first time, to the best of our knowledge, on the generation of terahertz radiation under the action of "single-color" and "dual-color" high-power femtosecond laser pulses on liquefied gas–liquid nitrogen. Our experimental results supported by careful theoretical interpretation showed clearly that under femtosecond laser radiation, liquid and air emit terahertz waves in a very different way. We assumed that the mobility of ions and electrons in liquid can play an essential role, forming a quasi-static electric field by means of ambipolar diffusion mechanism.
We present the results of research carried out for the first time, to the best of our knowledge, on the generation of terahertz radiation under the action of "single-color" and "dual-color" high-power femtosecond laser pulses on liquefied gas–liquid nitrogen. Our experimental results supported by careful theoretical interpretation showed clearly that under femtosecond laser radiation, liquid and air emit terahertz waves in a very different way. We assumed that the mobility of ions and electrons in liquid can play an essential role, forming a quasi-static electric field by means of ambipolar diffusion mechanism.
基金
Russian Foundation for Basic Research(RFBR)(17-02-01217,18-29-20104,18-52-16016)
Major National Development Project of Scientific Instrument and Equipment,China(2016YFF0100503)
National Natural Science Foundation of China(NSFC)(61722111)
111 Project,China(D18014)
International Joint Lab Program supported by Science and Technology Commission of Shanghai Municipality(STCSM)(17590750300)
