Detection of 1.4 μg/m3 Na+ in aerosol at a 30 m distance using 1 kHz femtosecond laser filamentation in air

Z Zhang, N Zhang, Y Wang, B Xie, Y Xiang, J Guo… - Optics …, 2023 - opg.optica.org
An optimized remote material detection scheme based on the laser filament-induced plasma
spectroscopy and light detection and ranging (FIPS-LIDAR) is proposed in this work. The …

Experimentally determined critical power for self-focusing of femtosecond vortex beams in air by a fluorescence measurement

W Liang, D Li, J Chang, T Xi, L Ji, D Li, L Zhang… - Optics …, 2023 - opg.optica.org
The filamentation of the femtosecond vortex beam has attracted much attention because of
the unique filamentation characteristics, such as annular distribution and helical …

Nitrogen fluorescence emission induced by femtosecond vortex beams in air

S Li, Y Wang, Y Zhang, C Liang, M Yu, Y Liu… - Physica Scripta, 2023 - iopscience.iop.org
Fluorescence emission is a typical nonlinear phenomenon occurring during the
femtosecond laser filamentation in air. The characteristics of nitrogen fluorescence emission …

Single-shot measurement of a laser waveform using plasma fluorescence in ambient air

K Yeom, W Cho, J Shin, B Kim, SI Hwang, JH Sung… - Optics …, 2024 - opg.optica.org
The temporal characterization of a laser pulse is an important task in studying ultrafast laser-
matter interactions. It is ideal to measure the temporal profile of the laser pulse with a single …

Femtosecond laser-induced nitrogen fluorescence emission at different air pressures

S Lin, Y Zhang, H Zhang, Y Zhang, M Chang… - Physics of …, 2021 - pubs.aip.org
In this paper, we experimentally investigate femtosecond laser-induced nitrogen
fluorescence emission at different air pressures (0.1 Pa–100 kPa). The variation of nitrogen …

[PDF][PDF] 自由曲面补偿飞秒激光成丝系统像差的应用

解博夫, 赵星, 陶诗诗, 张帅, 李浩然, 李渊博… - Acta Optica …, 2023 - researching.cn
摘要针对飞秒激光远距离成丝系统所产生的像差, 基于光学自由曲面较强的像差补偿能力,
提出了在飞秒激光成丝系统中使用透射式自由曲面相位板补偿系统像差的方法. 首先 …

Rapid diagnosis of femtosecond laser filament by single laser shot-induced acoustic pulses

B Shang, N Zhang, Z Zhang, P Qi, L Guo, L Lin… - Chinese Optics …, 2024 - opg.optica.org
Due to the promising applications of femtosecond laser filamentation in remote sensing,
great demands exist for diagnosing the spatiotemporal dynamics of filamentation. However …

[PDF][PDF] Rapid diagnosis of femtosecond laser filament by single laser shot induced acoustic pulse

N Zhang, B Shang, Z Zhang, P Qi, L Guo, L Lin… - Chin. Opt. Lett, 2024 - researching.cn
Due to the promising applications of femtosecond laser filamentation in remote sensing,
great demands exist for diagnosing the spatiotemporal dynamics of filamentation. However …

Equivalence Ratio Measurements in CH4/Air Gases Based on the Spatial Distribution of the Emission Intensity of Femtosecond Laser-Induced Filament

M Li, J Gu, D Zhang, Q Gao, B Li - Processes, 2021 - mdpi.com
Femtosecond lasers have been used in combustion diagnostics. Based on the
characteristics of femtosecond laser filamentation, many diagnostic techniques have been …

Filament based Ionizing Radiation Sensing Technology

W Liu, J Guo, N Zhang, L Sun, H Liu, S Tao… - arXiv preprint arXiv …, 2023 - arxiv.org
Accidental exposure to overdose ionizing radiation will inevitably lead to severe biological
damage, thus detecting and localizing radiation is essential. Traditional measurement …