Femtosecond-laser-produced low-density plasmas in transparent biological media: a tool for the creation of chemical, thermal, and thermomechanical effects below the optical breakdown threshold

2002 ◽  
Author(s):  
Alfred Vogel ◽  
Joachim Noack ◽  
Gereon Huettmann ◽  
Guenther Paltauf
Keyword(s):  
Femtosecond Laser ◽  
Optical Breakdown ◽  
Low Density ◽  
Breakdown Threshold ◽  
Biological Media ◽  
The Creation ◽  
Thermomechanical Effects

Near-Infrared Femtosecond Laser Induced Defect Formation in High Purity Silica Below the Optical Breakdown Threshold

2003 ◽  
Vol 20 (10) ◽  
pp. 1763-1766 ◽  
Author(s):  
Zhou Qin-Ling ◽  
Liu Li-Ying ◽  
Xu Lei ◽  
Wang Wen-Cheng ◽  
Zhu Cong-Shan ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Purity ◽  
Near Infrared ◽  
Defect Formation ◽  
Optical Breakdown ◽  
Breakdown Threshold

scholarly journals Theoretical study on femtosecond laser optical breakdown threshold in water mediated by aluminum nanoparticle coated with silica

2018 ◽  
Vol 26 (26) ◽  
pp. 34200 ◽  
Author(s):  
Qing Lin ◽  
Naifei Ren ◽  
Yunpeng Ren ◽  
Yan Chen ◽  
Zhiduo Xin ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Theoretical Study ◽  
Optical Breakdown ◽  
Breakdown Threshold

Femtosecond laser-induced optical breakdown threshold in water

2010 ◽  
Vol 22 (1) ◽  
pp. 49-52
Author(s):  
王亚伟 Wang Yawei ◽  
王立峰 Wang Lifeng ◽  
邓晓斌 Deng Xiaobin ◽  
刘莹 Liu Ying ◽  
卜敏 Bu Min ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Optical Breakdown ◽  
Breakdown Threshold

scholarly journals Optical breakdown threshold in fused silica with femtosecond laser pulses

2013 ◽  
Vol 31 (3) ◽  
pp. 523-529 ◽  
Author(s):  
A. Bendib ◽  
K. Bendib-Kalache ◽  
C. Deutsch
Keyword(s):  
Femtosecond Laser ◽  
Optical Breakdown ◽  
Laser Pulses ◽  
Energy Balance Equation ◽  
Femtosecond Laser Pulses ◽  
Fused Silica ◽  
Breakdown Threshold ◽  
Density Profiles ◽  
Electron Density Profiles ◽  
Three Body

AbstractA theoretical model for electrons in the conduction band intend to investigate the optical breakdown threshold in femtosecond laser pulse-fused silica interaction is presented. The model is derived from a rate equation that includes the avalanche and multi-photon ionization processes of Thornber and Keldysh, respectively, and also the three-body and exciton recombination mechanisms. In addition, the time evolution of electron mean energy is also considered through the energy balance equation. The mean energy acts as a trigger for the avalanche mechanism. The evolution of electron density profiles is calculated and discussed with respect to the ionization and recombination mechanisms. The results for the fluence threshold as a function of the pulse duration fall in good agreement with the experimental data reported in the literature.

Nanosecond laser-induced breakdown assisted by femtosecond laser pre-ionization in air: the effect on spatial resolution and continuous radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20701
Author(s):  
Bo Li ◽  
Xiaofeng Li ◽  
Zhifeng Zhu ◽  
Qiang Gao
Keyword(s):  
Femtosecond Laser ◽  
Spatial Resolution ◽  
Laser Induced Breakdown Spectroscopy ◽  
Nanosecond Laser ◽  
Breakdown Threshold ◽  
Powerful Technique ◽  
Breakdown Spectroscopy ◽  
Continuous Radiation ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for quantitative diagnostics of gases. The spatial resolution of LIBS, however, is limited by the volume of plasma. Here femtosecond-nanosecond dual-pulsed LIBS was demonstrated. Using this method, the breakdown threshold was reduced by 80%, and decay of continuous radiation was shortened. In addition, the volume of the plasma was shrunk by 85% and hence, the spatial resolution of LIBS was significantly improved.

Optical breakdown and filamentation of femtosecond laser pulses propagating in air at a kHz repetition rate

2004 ◽  
Vol 13 (3) ◽  
pp. 359-363 ◽  
Author(s):  
Duan Zuo-Liang ◽  
Chen Jian-Ping ◽  
Li Ru-Xin ◽  
Lin Li-Huang ◽  
Xu Zhi-Zhan
Keyword(s):  
Femtosecond Laser ◽  
Repetition Rate ◽  
Optical Breakdown ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses
Sign in / Sign up

Export Citation Format

Share Document