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Photoinduced Solid Phase Transformation in Vanadium Dioxide Films

  • Sergiy Lysenko (a1), Valentin Vikhnin (a2), Armando Rua (a3), Felix Fernandez (a4) and Huimin Liu (a5)...

Abstract

Laser induced insulator-to-metal phase transition in VO2 thin films was explored using femtosecond optical pump-probe spectroscopy. The transient reflection and relaxation processes in VO2 were observed during phase transition on 10-11 - 10-9 temporal-scale. Optical generation of carriers in VO2 initiates extremely fast changes in reflectivity which is strongly dependent on pump fluence. Analysis of transient optical properties allows suggesting the excitonic-controlled mechanism responsible for the light-induced phase transition in VO2.

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Keywords

Photoinduced Solid Phase Transformation in Vanadium Dioxide Films

  • Sergiy Lysenko (a1), Valentin Vikhnin (a2), Armando Rua (a3), Felix Fernandez (a4) and Huimin Liu (a5)...

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