Vyacheslav (Slava) Leshchenko

• R&D on KW-scale ultrafast laser and nonliear optical systems for LCLS-II
• Developing high-power high-energy nonlinear compression systems at 1-2 μm
• Developing high-power nonliear frequency conversion systems in UV to MidIR spectral ranges.

NeXUS attosecond facility (NSF mid-scale)

Developing high-power attosecond high order harmonic sources pumped with a kW-class high-repetition rate laser system and the beamlines delivering these attosecond pulses to the end-stations: ATTO/XAS/XRS, LIED, STM, ARPES.

DiMauro group (principal investigator: Prof. Dr. Louis DiMauro and Prof. Dr. Pierre Agostini), the Department of Physics of The Ohio State University, Columbus, Ohio, USA

Developing multi-mJ 2.4 µm femtosecond laser system for applications in atomic, molecular and optical physics. Pioneering a new approach for nonlinear compression of the generated mid-IR pulses to few-cycle pulse duration in a simple and compact lens-based setup. Applying these pulses to generation of water window soft-X-ray high harmonic and near-single-cycle long-wave infrared pulse with GW peak power; and to studies of ultrafast dynamics of nano-plasmas and phase-resolved attosecond transient absorption spectroscopy of atoms and molecules

Petawatt Field Synthesizer group (principal investigator: Prof. Dr. Stefan Karsch), Laboratory of Attosecond Physics (director: Prof. Dr. Ferenc Krausz), Max Planck Institute of Quantum Optics and Ludwig-Maximilian University, Munich, Germany.

Commissioning (including planning and organizing a rebuild) of a unique OPCPA system (Petawatt Field Synthesizer) generating few-cycle pulses with relativistic intensity and exceptionally good temporal contrast.

Planning and conducting experiments with this system on the surface high harmonics generation (SHHG). As an outcome, the possibility to generate high-energy isolated attosecond pulses via relativistic SHHG was experimentally proven.

Supporting pioneering work on nonlinear compression of femtosecond pulses on the few 100s W average power level and tens of mJ energy level in a multi-pass cell