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<專題討論>2017/4/20(四)14:10綜合大樓2樓48218教室演講「The nonlinear optics of coherent EUV generation: harness attosecond science and nano imaging」( 陳明彰 助理教授 / 清華大學光電工程研究所 )

張貼者:2017年4月16日 下午7:53Dabby Lu

To explore the world, people use their eyes and hands to see and to manipulate the objects around them. To see the nano-world and ultrafast electron dynamics, the development of new tools is highly desired in this generation. When moving my research career back to NTHU in 2013 spring, I built a EUV&ATTO lab aiming for making a bright, coherent table-top EUV and soft X-ray lasers. My recent research is focusing on understanding the mechanism of high order harmonic generation (HHG) — a process to convert visible/infrared light into light with much shorter wavelength. Simply speaking, when intense visible/infrared light is focused into noble gas atoms, the nonlinear interaction between them could give light with tens of times higher frequency. The spectrum, spatial coherence and brightness of the generated light depend on a lot of parameters like the interaction geometry, the driving laser frequency, and how well the phase matching condition is satisfied. Huge progresses have been made in recent years during my research in NTHU. This new accessible and reliable table-top EUV light source makes a lot of the first possibilities in Taiwan, e.g. providing ultrafast EUV light for Time-Resolved Angle-resolved Photoemission Spectroscopy (TR-ARPES) in NSRRC, and coherent 13.5nm EUV light source for semiconductor industries for nanometer-scale defect inspection.

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Dabby Lu,
2017年4月16日 下午7:53
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