WSMON4: Ultrafast Pump Probe Optical Microscopy Techniques and their Applications in Nanoscience

Monday 17 May 2021, 10:00 → 16:45 US/Eastern

Virtual Workshop (Zoom link will be provided)

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Ultrafast pump-probe optical microscopy combines the nanoscale advantages of diffraction limited spatial resolution of conventional optical microscopy (Raman, absorption) with the ultrafast temporal resolution of pump probe spectroscopy onto a single experiment to deliver nanoscale dynamic understanding of phenomena like charge carrier transport, exciton migration and polariton propagation. So far, these techniques have been applied successfully to unveil and correlate dynamics in nanomaterials and related complexes including heterojunctions or to distinguish ultrafast phenomena even at the single nanostructure level. While ultrafast pump-probe spectroscopy is a well matured technique, its nanoscale microscopy variation has been shy in implementation, with a recent increased in utilization by several research groups in the USA and abroad. Successful utilization of ultrafast pump-probe optical microscopy includes the studies of dynamics in low dimensional materials like quantum dots, nanowires and more recently atomically thin two-dimensional van Der Waals structures, in particular the help these studies have provided in designing new or improved nanomaterials for energy harvesting and storage, light emitting and quantum information processing. More recently, there have been even attempts to incorporate synchrotron radiation probing in combination with ultrafast optical microscopy. This workshop’s main goal is to bring together leading researchers from academia, industry and federal laboratories, including DOE NSRCs, and to discuss the state of the art of various implementations of ultrafast pump-probe optical microscopies within USA groups and abroad and possible interfacing with synchrotron studies and implications of the utilization of these methods in understanding dynamics at nanoscale and at ultrafast times in nanomaterials and the potential gain resulted from such studies. We intend to survey the potential interest of the user community in utilizing such experiments within the NSRCs and in combination with synchrotrons.

Workshop Organizers:
Mircea Cotlet, BNL
Mingxing Li, BNL
Jurek Sadowski, BNL
Eduard Fron, Katholieke Universiteit Leuven Belgium
Don DiMarzio, Northrop Grumman Corporation

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10:00 → 10:05 Introduction/opening remarks by organizers

10:05 → 10:35 Ultrafast Studies of Isomerization and Proton Transfer in Photoactive Fluorescent Proteins

Speaker: Steve Meech (Dept. Chemistry, University of East Anglia, United Kingdom)

Meech.pdf

10:35 → 11:05 IMEC’s AttoLab adaptation of ultrafast pump probe spectroscopy and lensless imaging techniques to study nanodevice fabrication and high energy radiolysis of photoresists

Speaker: John Petersen (IMEC, Leuven, Belgium)

Petersen.pdf

11:05 → 11:35 Synchrotron and Optical Probing of Mixed Halide Perovskites for Photovoltaics

Speaker: Deidra R. Hodges (Electrical Engineering, UT El Paso, TX)

Hodges.pdf

11:35 → 11:45 Break

11:45 → 12:15 Pump-probe spectroscopy reveals fundamental excited state dynamics of noble metal nanoparticles

Speaker: Eduard Fron (Dept. Chemistry, K.U.Leuven, Belgium )

Fron.pdf

12:15 → 12:45 Ultrafast Dynamic Microscopy of Exciton and Charge Transport

Speaker: Libai Huang (Dept. Chemistry, Purdue University)

Huang.pdf

12:45 → 13:45 Lunch Break

13:45 → 14:15 Ultrafast Pump-Probe Microscopy of Photocarrier Transport in 2D Materials and Heterostructures

Speaker: Hui Zhao (Department of Physics and Astronomy, The University of Kansas)

Zhao.pdf

14:15 → 14:45 Low Energy Spectroscopies with Synchrotron Radiation: From Micro to Nano and Opportunities for Time-Resolved Methods

Speaker: Larry Carr (NSLS-2 Brookhaven National Laboratory, NY)

Carr.pdf

14:45 → 15:15 Poincaré engineering of the nanofemto topology of surface plasmon polariton fields

Speaker: Prof. Hrvoje Petek (Department of Physics and Astronomy, University of Pittsburgh)

Petek.pdf

15:15 → 15:25 Break

15:25 → 15:55 Unraveling fundamental processes in two-dimensional nanomaterials with ultrafast nonlinear optical microscopy

Speaker: Rohit Prasankumar (Center for Integrated Nanotechnologies Los Alamos National Laboratory, NM)

Prasankumar.pdf

15:55 → 16:25 Time-resolved hard x-ray diffraction microscopy for nanoscience

Speaker: Haidan Wen (X- Ray Science Division, Argonne National Laboratory)

Wen.pdf

16:25 → 16:45 Discussion on the future of the ultrafast/synchrotron field and concluding remarks