From the 1 of 2 linked papers with an AI index.
2 papers
physics.optics2026
Vortex-Beam Transient Absorption Microspectroscopy Resolves Ultrafast Free-Exciton and Polaron Diffusion in 2D Perovskites
Ju-Young Kim, Anirban Mondal, Gi Rim Han +4
The authors introduce a vortex‑beam transient absorption microspectroscopy (VTAM) technique that encodes spatial diffusion into the pump‑probe signal, allowing sub‑picosecond measu…
cond-mat.mes-hall2025
In situ and real-time ultrafast spectroscopy of photoinduced reactions in perovskite nanomaterials
Gi Rim Han, Mai Ngoc An, Hyunmin Jang +5
Employing two synchronized mode-locked femtosecond lasers and interferometric detection of the pump-probe spectra -- referred to as asynchronous and interferometric transient absor…