2026 CAP Congress / Congrès de l'ACP 2026

Predicting an Ultrafast Dynamic Refractive Index Grating in an Epsilon-Near-Zero Conductive Oxide Thin Film Created by Femtosecond Laser Pulses

23 Jun 2026, 18:00

1h 30m

U. Ottawa - Learning Crossroads (CRX) Building

Oral not-in-competition (Graduate Student) / Orale non-compétitive (Étudiant(e) du 2e ou 3e cycle) Atomic, Molecular and Optical Physics, Canada / Physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) DAMOPC Poster Session & Student Poster Competition | Session d'affiches DPAMPC et concours d'affiches étudiantes

Speaker

Megan Pulford

Description

We simulate the ultrafast optical response of an Indium Tin Oxide (ITO) thin film near its Epsilon-Near-Zero (ENZ) wavelength when excited by two femtosecond laser pulses. A temperature dependent Drude model captures the nonlinear optical behavior arising from electron heating in the thin ITO film. Initial results show that ultrafast heating from two pulses induces a complex dynamic grating structure in the permittivity, revealing its potential for ultrafast optical modulation and control.

Presentation materials

CAP_Abstract_Megan Pulford.pdf