Pulse-width and focal-volume dependence of laser-induced breakdown

1981 ◽  
Vol 23 (5) ◽  
pp. 2144-2151 ◽  
Author(s):  
E. W. Van Stryland ◽  
M. J. Soileau ◽  
Arthur L. Smirl ◽  
William E. Williams
Keyword(s):  
Pulse Width ◽  
Focal Volume ◽  
Volume Dependence ◽  
Laser Induced Breakdown

Pulse-Width and Focal-Volume Dependence of Laser-Induced Breakdown

2009 ◽  
pp. 375-375-10
Author(s):  
EW Van Stryland ◽  
MJ Soileau ◽  
AL Smirl ◽  
WE Williams
Keyword(s):  
Pulse Width ◽  
Focal Volume ◽  
Volume Dependence ◽  
Laser Induced Breakdown

Unburned carbon measurement in fly ash using laser-induced breakdown spectroscopy with short nanosecond pulse width laser

2019 ◽  
Vol 30 (6) ◽  
pp. 1210-1218 ◽  
Author(s):  
Renwei Liu ◽  
Yoshihiro Deguchi ◽  
Weigang Nan ◽  
Ruomu Hu ◽  
Zhenzhen Wang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Pulse Width ◽  
Nanosecond Pulse ◽  
Unburned Carbon ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown

Shadowgraphic Imaging of Dilute Carbon and Mo2Ag4S8,[PPh3]4 Suspensions

1997 ◽  
Vol 479 ◽  
Author(s):  
Robert Goedert ◽  
Roger Becker ◽  
Andrew Clements ◽  
Thomas Whittaker
Keyword(s):  
Carbon Particle ◽  
Input Pulse ◽  
Laser Pulses ◽  
Focal Volume ◽  
Time Resolved ◽  
Nonlinear Materials ◽  
Input Pulse Energy ◽  
Laser Induced Breakdown ◽  
Plasma Absorption ◽  
Keywords Laser

AbstractTime-resolved imagery is presented showing the changes that occur in the focal volume of dilute liquid/particle suspensions following the arrival of single, Q-switched, frequency-doubled, Nd:YAG laser pulses. Limiting data and corresponding imagery at 21, 84, 244, 790, and 2900 nanoseconds following the laser pulse are presented for a carbon particle suspension consisting of used (carbonized) 1OW-15 motor oil and for a suspension of the inorganic metallic cluster molecule Mo2Ag4S8 [PPh3]4. The images in conjunction with the accompanying limiting data show that the reduction in transmission, observed as the input pulse energy is increased, results from scattering from bubbles augmented by plasma absorption. Keywords: laser induced breakdown, plasma, suspension, bubble, nonlinear materials, shadowgraph, imagery

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.

VOLUME DEPENDENCE OF OPTICAL TRANSITIONS IN GaAs : PHOTOMODULATED REFLECTIVITY

1984 ◽  
Vol 45 (C8) ◽  
pp. C8-57-C8-60 ◽  
Author(s):  
M. Hanfland ◽  
K. Syassen ◽  
N. E. Christensen
Keyword(s):  
Optical Transitions ◽  
Volume Dependence
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