2017 CAP Congress / Congrès de l'ACP 2017

Session

R3-2 Ultrafast and Time-Resolved Processes (DAMOPC/DCMMP) | Procédés ultrarapides et résolus dans le temps (DPAMPC/DPMCM)

R3-2

1 Jun 2017, 13:30

BioSci 1103 (Queen's University)

Conveners

R3-2 Ultrafast and Time-Resolved Processes (DAMOPC/DCMMP) | Procédés ultrarapides et résolus dans le temps (DPAMPC/DPMCM)

• Marc Dignam (Queen's University)

1733. Long-lived Spin/Valley Dynamics of Resident Electrons and Holes in Monolayer Transition Metal Dichalcogenides

Prof. Luyi Yang (University of Toronto)

01/06/2017, 13:30

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

Invited Speaker / Conférencier invité

Interest in atomically-thin transition metal dichalcogenide (TMD) semiconductors such as MoS2 and WSe2 has exploded in the last few years, driven by the new physics of coupled spin/valley degrees of freedom and their potential for new spintronic and ‘valleytronic’ devices. Although robust spin and valley degrees of freedom have been inferred from polarized photoluminescence (PL) studies of...

1677. Extracting structural disorder signatures from vibrational spectra using photoacoustic detection

Kristin Poduska (Memorial University of Newfoundland)

01/06/2017, 14:00

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

CLOSED - Oral (Non-Student) / orale (non-étudiant)

This work demonstrates that, in order for Fourier transform infrared (FTIR) spectroscopy to be an effective materials characterization tool, it is essential to evaluate which bands are affected exclusively by specimen differences, independent of the detection and data analysis methodologies. To do this, we compared standard optical detection with photoacoustic detection of FTIR spectra for two...

1829. Ultra-short double pulse laser ablation: basic mechanisms and nanoparticle formation

Georg D. Förster (Université de Montréal)

01/06/2017, 14:15

Condensed Matter and Materials Physics / Physique de la matière condensée et matériaux (DCMMP-DPMCM)

CLOSED - Oral (Non-Student) / orale (non-étudiant)

Laser ablation is the process of material removal from a target surface by intense Laser radiation. The technique is used for the production of nanoparticles (NPs) and associated thin films, micromachining of surfaces, and Laser-induced breakdown spectroscopy (LIBS) for material analysis. The amount of ablated material, sample heating, plasma properties (density, temperature, and luminosity)...

1658. High Harmonic Generation and XUV Free Induction Decay From Electronic Wavepackets

Mr Samuel Beaulieu (INRS-EMT, Bordeaux University)

01/06/2017, 14:30

Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC)

Invited Speaker / Conférencier invité

In High-order Harmonic Generation (HHG), the electron that tunnel ionize from a given electronic state generally photorecombine onto the same state. We have demonstrated that during a few cycle laser pulse, several Rydberg states can be populated and open a new channels for HHG : the tunnel ionization from excited states and photorecombination onto the ground state. Using the attosecond...