Ultrafast optical phase response associated with photoinduced phase transition in VO 2
Abstract
VO 2 is a prototypical strongly correlated material that undergoes photoinduced phase transitions on the femtosecond scale. To explore its potential for ultrafast all-optical phase modulation, we constructed a femtosecond time-resolved interferometer to directly probe the optical phase response, revealing the change in the real part of the refractive index during the phase transition. The observed optical phase dynamics exhibit faster and slower components, reflecting different stages of the phase transition process. The overall magnitude of the phase shift is largely determined by the ultrafast response, demonstrating the feasibility of femtosecond all-optical phase modulation in VO 2 thin films.
Fields of Study & Subjects
Transition Metal Oxide Nanomaterials
Photorefractive and Nonlinear Optics
Magneto-Optical Properties and Applications
Publication details
- Journal / source
- Optical Materials Express
- Publisher
- Optica Publishing Group
- Volume
- 16
- Issue
- 3
- Pages
- 464–464
- Publication date
- 21 January 2026
- Language
- EN