About this role
ARCNL Work Activities How fast can a material switch its electronic state and what happens within a single optical cycle? In this project, you will develop nonlinear pulse compression in gas-filled hollow-capillary fibers , exploiting soliton-like dynamics to generate intense few-cycle laser pulses3. These pulses will provide the temporal resolution needed to bring ultrafast dynamics into HADES and push microscopy toward the combined attosecond-nanometer frontier . Figure 1: Self-phase modulation-based pulse-compression scheme in a gas-filled hollow-capillary fibre.
Figure taken from 4. What will you be doing: You will design and optimize a nonlinear pulse-compression scheme based on gas-filled hollow-capillary fibers, combining simulations with hands-on experiments. You will investigate soliton dynamics and nonlinear pulse propagation, characterize spectral broadening and pulse duration, and work toward generating intense few-cycle laser pulses. Ultimately, these pulses will be integrated into HADES microscope to enable access to ultrafast and potentially sub-cycle dynamics in solids. References: 1 Nie, Z., et al. "Following the nonthermal phase transition in niobium dioxide by time-resolved harmonic spectroscopy."
Physical review letters 131.24 (2023): 243201. 2Murzyn, Kevin, et al. "Breaking Abbe's diffraction limit with harmonic deactivation microscopy." Science advances 10.46 (2024): eadp3056. 3Travers, John C. "Optical solitons in hollow-core fibres." Optics Communications 555 (2024): 130191. 4 Travers, John C., et al. "High-energy pulse self-compression and ultraviolet generation through soliton dynamics in hollow capillary fibres." Nature Photonics 13.8 (2019): 547-554.
Qualifications
You should hold a Bachelor's degree in physics or a related field. Work environment ARCNL performs fundamental research, focusing on the physics and chemistry involved in current and future key technologies in nanolithography, prima...