Keith Yabumoto

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This study has observed coherent LO phonon oscillations in ZnS for the first time using a noncollinear optical parametric amplifier (NOPA) as a light source. Merits using NOPA are not only tunability in a visible region but also shorter pulse width than those of conventional optical parametric amplifiers. Therefore, NOPA is suitable for observing coherent(More)
We observed coherent phonon oscillations in ZnTe by means of a transmission electro-optic sampling using noncollinear optical parametric amplifier. We investigated the excitation energy dependence of the coherent phonon amplitude. Recently, wide-gap semiconductors have attracted much attention as potential materials for new optoelectronics devices. In order(More)
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