Ultra-broadband femtosecond measurements of the photo-induced phase transition in VO2 : From the mid-IR to the hard X-rays
Journal of the Physical Society of Japan 75:1 (2006)
Abstract:
We review our work on the photo-induced insulator-metal transition in the strongly-correlated, spin-Peierls compound VO2. Our pump-probe experiments exploit the full spectral range of modern femtosecond science, combining time-resolved mid-IR and visible techniques with ultrafast soft x-ray absorption and hard x-ray diffraction. We also report on the switching behavior of VO2 nanoparticles embedded in Silica or in optical fibers, a new route to incorporate complex, photo-active materials into technologically viable environments. ©2006 The Physical Society of Japan.Ultrafast gigantic photo-response in (EDO-TTF)2 PF6 initiated by 10-fs laser pulses
Optics InfoBase Conference Papers (2006)
Abstract:
We photoexited a charge-ordered organic salt (EDO-TTF)2PF6 with sub-10-fs optical pulses. The photo-induced metallic phase appeared within 50-fs after pumping, characterized by large changes in reflectivity (ΔR/R~0.8) followed by strong coherent phonon modulation. © 2006 Optical Society of America.Enhanced photosusceptibility in the insulator-to-metal phase transition in vanadium dioxide
Optica Publishing Group (2006) mg6
Lattice Motions from THz Phonon-polaritons measured with Femtosecond X-ray Diffraction.
Optica Publishing Group (2006) wb4
Ultrafast Gigantic Photo-Response in (EDO-TTF)2PF6 Initiated by 10-fs Laser Pulses
Optica Publishing Group (2006) thd12