VO2 Nano-particles in Silica: Ultrafast Phase Transition and Shape-dependent Optical Switching at 1.55 µm
Optics InfoBase Conference Papers (2004)
Abstract:
We report on the ultrafast insulator-metal phase transition of nanorods of VO2 in Silica. The magnitude of the 1.55-µm, room temperature optical switching can be controlled by particle size and geometry.Evidence for a structurally-driven insulator-to-metal transition in VO2:: A view from the ultrafast timescale -: art. no. 161102
PHYSICAL REVIEW B 70:16 (2004) ARTN 161102
Femtosecond X-rays and structural dynamics in condensed matter
ULTRAFAST DYNAMICAL PROCESSES IN SEMICONDUCTORS 92 (2004) 309-337
Generation of femtosecond synchrotron pulses: Performance and characterization
AIP CONF PROC 705 (2004) 1403-1406
Abstract:
Femtosecond synchrotron pulses of <200 fs duration are generated at the Advanced Light Source beamline 5.3.1 via laser manipulation of the stored electron beam. We demonstrate a peak laser acceleration of >13 MeV relative to the nominal 1.9 GeV beam energy. Femtosecond pulses are effectively isolated from the long-pulse background using the transverse dispersion of the storage ring in combination with an x-ray imaging optic and a pair of slits to achieve a signal/background ratio of similar to1.Picosecond soft x-ray absorption measurement of the photoinduced insulator-to-metal transition in VO2 -: art. no. 153106
PHYSICAL REVIEW B 69:15 (2004) ARTN 153106