title: Ultrafast polarization response of an optically trapped single ferroelectric nanowire.
abstract: One-dimensional potassium niobate nanowires are of interest as building blocks in integrated piezoelectric devices, exhibiting large nonlinear optical and piezoelectric responses. Here we present femtosecond measurements of light-induced polarization dynamics within an optically trapped ferroelectric nanowire, using the second-order nonlinear susceptibility as a real-time structural probe. Large amplitude, reversible modulations of the nonlinear susceptibility are observed within single nanowires at megahertz repetition rates, developing on few-picosecond time-scales, associated with anomalous coupling of light into the nanowire.
authors: Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States.
authors: Sanghee
authors: S
authors: Nah
authors: Yi-Hong
authors: YH
authors: Kuo
authors: Frank
authors: F
authors: Chen
authors: Joonsuk
authors: J
authors: Park
authors: Robert
authors: R
authors: Sinclair
authors: Aaron M
authors: AM
authors: Lindenberg