2026 Research Days
Binghamton Research Days Student Presentations

Measuring Phase Shift Using Frequency Domain Holography

Authors: Shalmalee Deshpande, Yuxuan Zhang, Cameron Lapadula, Bonggu Shim

Field of Study: Physics: Mathematical Physics

Program Affiliation: SCALE

Faculty Mentors: Bonggu Shim

Easel: 9

Timeslot: Morning

Abstract: Laser-induced ionization generates plasma and modifies the refractive index, causing phase and amplitude changes in the probe pulse. This research employs a single-shot technique called frequency domain holography (FDH), which relies on a chirped probe pulse to map frequency to time and measure the probe’s temporal phase shift, enabling visualization of pump-induced ionization in glass. This approach provides ~20 fs temporal resolution over a ~2 ps window in a single shot, allowing characterization of ultrafast spatio-temporal phase evolution driven by the optical Kerr effect and plasma in Corning Willow Glass sample, and offers a reliable method to study ultrafast laser–matter interactions.