Self-consistent model and numerical approach for laser-induced non-equilibrium plasma

S Pokharel, AA Tropina - Journal of Applied Physics, 2023 - pubs.aip.org
This paper presents a self-consistent multi-dimensional mathematical model and a
numerical approach for simulating the low-temperature plasma induced by the femtosecond …

Single-shot spontaneous Raman scattering for time-resolved one-dimensional hypersonic flow diagnostics

J Bak, BS Leonov, RB Miles - Optica, 2025 - opg.optica.org
Spontaneous Raman scattering, also known as common old ordinary Raman scattering
(COORS), is revisited to evaluate its applicability for hypersonic flow characterization. Due to …

Laser intensity sha**: hydrodynamic effects and energy coupling in dual pulse laser energy deposition

J Bak, S Pokharel, H Hadden, A Naidu… - AIAA SCITECH 2024 …, 2024 - arc.aiaa.org
A dual-pulse laser approach, where the initial pre-ionization and subsequent energy
addition are temporally separated, offers enhanced control over the energy deposition …

Characteristics of Plasma Decay in Dual Pulse Energy Deposition for Air and Nitrogen in Atmospheric Pressure

J Bak, S Pokharel, C Grunbok… - … FORUM AND ASCEND …, 2024 - arc.aiaa.org
Understanding air plasma is of great interest in various applications including directed
energy systems, air-breathing plasma propulsion, and atmospheric plasma sources. In this …

Single-shot common old ordinary Raman scattering for time-resolved one-dimensional hypersonic flow diagnostics

J Bak, B Leonov, R Miles - 2024 - preprints.opticaopen.org
Common old ordinary Raman scattering (COORS) is revisited to evaluate its applicability for
hypersonic flow characterization. Due to its very low cross-section, Raman scattering is often …

Characteristics of Femtosecond Laser Induced Filament and Energy Coupling by Nanosecond Laser Pulse in Air

S Pokharel, A Tropina - arxiv preprint arxiv:2502.00875, 2025 - arxiv.org
This study presents a detailed plasma kinetics model for laser-induced non-equilibrium
plasmas in atmospheric pressure air, incorporating a self-consistent energy balance and …

Revisit of common old ordinary Raman scattering (COORS): Localized one-dimensional diagnostics of hypersonic flows

J Bak, BS Leonov, RB Miles - AIAA SCITECH 2025 Forum, 2025 - arc.aiaa.org
In our recent work, we successfully demonstrated single-shot common old ordinary Raman
scattering (COORS) for localized one-dimensional (1D) hypersonic flow diagnostic …

A Study of Femtosecond Filamentation at High Pressures in the Context of Plasma-Assisted Combustion

M Hooshyar, K Wijesekara, C Dumitrache - AIAA SCITECH 2025 Forum, 2025 - arc.aiaa.org
This study investigates the behavior of femtosecond laser-induced plasma filaments at high
pressures, focusing on their fundamental characteristics in the context of future practical …

[PDF][PDF] 基于光丝的激光精密加工技术 (特邀)

何宏智, 柴兆麟, 张楠, 刘伟伟 - ACTA PHOTONICA SINICA, 2024 - researching.cn
光丝的高**度和大长宽比特性, 使基于光丝的激光精密加工技术在消费电子, 芯片制造,
通讯和医疗等领域具有重要的应用和广阔的发展前景. 对光丝在高深宽比微结构 …