Measurements of transient dynamic conductivity in graphene

Dr Gary Beane, Phat Nguyen, A/Prof Agustin Schiffrin

Overview of measurements

1.There are 3 samples (Cavity 1, Cavity 2 and the bare perovskite sample)

2.Epeak measurements (130mW, 60mW, 30mW)

3.Pump probe measurements taken at delay times of -5,0,5,50 and 500 ps

Toward FLEET’s Theme 3 goal: Light-transformed materials

Light-induced topological phase transition in graphene

Can we probe the topological phase transition by using THz-TDS?

Toward FLEET’s Theme 3 goal: Light-transformed materials

Study non-excited graphene THz complex conductivity

Study graphene THz photoconductivity in NIR/MIR region

Study time- and frequency-dependent changes of graphene conductivity

Graphene device fabrication & characterisation

Terahertz time-domain spectroscopy (THz-TDS)