Femtosecond Laser Precision Engineering: From Micron, Submicron, to Nanoscale
Zhenyuan Lin, Minghui Hong · 1 Jan 2021
As a noncontact strategy with flexible tools and high efficiency, laser precision engineering is a significant advanced processing way for high-quality micro-/nanostructure fabrication, especially to achieve novel functional photoelectric structures and devices. For the microscale creation, several femtosecond laser fabrication methods, including multiphoton absorption, laser-induced plasma-assisted ablation, and incubation effect have been developed. Meanwhile, the…
Highly Sensitive and Fast Hydrogen Detection Based on Light-Induced Thermoelastic Spectroscopy
Yufei Ma, Tiantian Liang, Shunda Qiao et al. · 1 Jan 2023
As a new energy source, hydrogen (H 2 ) detection is a hot topic in recent years. Because of the weak absorption characteristic, laser spectroscopy-based H 2 detection is challenging. In this paper, a highly sensitive H 2 sensor based on light-induced thermoelastic spectroscopy (LITES) technique is demonstrated for the first time. A continuous-wave, distributed…
Nature-Inspired Superwettability Achieved by Femtosecond Lasers
Jiale Yong, Qing Yang, Xun Hou et al. · 1 Jan 2022
Wettability is one of a solid surface’s fundamental physical and chemical properties, which involves a wide range of applications. Femtosecond laser microfabrication has many advantages compared to traditional laser processing. This technology has been successfully applied to control the wettability of material surfaces. This review systematically summarizes the recent progress of femtosecond laser microfabrication in…
Theoretical Insights into Ultrafast Dynamics in Quantum Materials
Mengxue Guan, Daqiang Chen, Shiqi Hu et al. · 1 Jan 2022
The last few decades have witnessed the extraordinary advances in theoretical and experimental tools, which have enabled the manipulation and monitoring of ultrafast dynamics with high precisions. For modeling dynamical responses beyond the perturbative regime, computational methods based on time-dependent density functional theory (TDDFT) are the optimal choices. Here, we introduce TDAP (time-dependent ab initio…
High-Sensitivity Gas Detection with Air-Lasing-Assisted Coherent Raman Spectroscopy
Zhihao Zhang, Fangbo Zhang, Bo Xu et al. · 1 Jan 2022
Remote or standoff detection of greenhouse gases, air pollutants, and biological agents with innovative ultrafast laser technology attracts growing interests in recent years. Hybrid femtosecond/picosecond coherent Raman spectroscopy is considered as one of the most versatile techniques due to its great advantages in terms of detection sensitivity and chemical specificity. However, the simultaneous requirement for…
