Time-resolved absorption spectroscopy of optically pumped Si by using fs-laser plasma x-ray

摘要

Femtosecond laser-produced plasmas emit ultrashort x-ray pulse that is synchronized to a femtosecond laser pulse. By utilizing this feature, we demonstrated time-resolved soft x-ray absorption measurmeents of optically pumped silicon near its Lii, iii absorption edge by means of pump-probe spectroscopy. As a result, we observed more than 10