Study of Plasma Oscillator as a Radiation Source and Pulse Compression

M.S. Hur

Plasma is a medium equipped with rich optical properties due to its electromagnetic susceptibility. Among them, plasma oscillation is a simple and fundamental characteristic of a plasma. One good example of its successful application might be the wakefield electron acceleration in a plasma, whereas its usefulness as a radiation source has been overlooked. Recently several ideas for using the plasma oscillation as a THz radiation source have emerged, such as inverse mode conversion [1] or superluminous plasma wave [2]. In our research, we devised an exotic idea of isolating a single plasma oscillator, which can directly emit a radiation with almost a hundred percent (actually, theoretically) coupling efficiency between radiation and oscillator. In this presentation, I will brief a couple of ideas to accomplish the isolation of a plasma oscillator and THz emission from that. Also, though it is not quite on the context of radiation source, I will brief our recent study for compression of laser pulses in a density