Andrea Cavalleri: Publications

Ultrafast soft X-ray absorption spectroscopy of the VO2 electronic phase transition

OSA Trends in Optics and Photonics Series 97 (2004) 153-154

Authors:

A Cavalleri, HH Chong, TE Glover, PA Heimann, HA Padmore, RW Schoenlein, S Fourmaux, JC Kieffer

Abstract:

The photo-induced insulator-to-metal transition in strongly-correlated VO2 is studied with picosecond Near-edge X-ray Absorption Spectroscopy. Progress toward femtosecond measurements using sliced pulses of synchrotron radiation will be reported.

VO2 Nano-particles in Silica: Ultrafast Phase Transition and Shape-dependent Optical Switching at 1.55 µm

Optics Infobase Conference Papers (2004)

Authors:

M Rini, A Cavalleri, RW Schoenlein, R Lopez, C Feldman, R Haglund, LA Boatner, TE Haynes

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

Authors:

A Cavalleri, T Dekorsy, HHW Chong, JC Kieffer, RW Schoenlein

Femtosecond X-rays and structural dynamics in condensed matter

ULTRAFAST DYNAMICAL PROCESSES IN SEMICONDUCTORS 92 (2004) 309-337

Authors:

A Cavalleri, RW Schoenlein

Generation of femtosecond synchrotron pulses: Performance and characterization

AIP CONF PROC 705 (2004) 1403-1406

Authors:

RW Schoenlein, A Cavalleri, HHW Chong, TE Glover, PA Heimann, AA Zholents, MS Zolotorev

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.

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