Ultrafast Infrared & THz Science invites to an interesting seminar on:
Understanding and Exploiting the Properties of Low-Dimensional Materials Using Advanced Light
Abstract:
Abstract: In this talk, I will review recent work characterising the nonlinear optical response at telecoms wavelengths of a new class of two-dimensional semiconductor – a subset of the family of transition metal dichalcogenides (TMDs). Specially, I will present results assessing the strength of the second- and third-order nonlinear susceptibilities of MoS2 – a prototypical TMD with a direct bandgap for the mono-layer crystal that has the potential to become a platform for future optoelectronic devices, compatible with large-scale mass-manufacture through the application of inkjet printing techniques.
Secondly, I will provide an update on an ongoing effort to develop a high-repetition rate (2-20 MHz) ultrafast vacuum ultraviolet light source that utilises recent advances in the emergent field of gas-based nonlinear fibre optics and motivate how this source, together with a low-energy excitation at terahertz frequencies, could prove the next evolution in tabletop laser technology for studying the non-equilibrium physics of low-dimensional material systems by photoemission.