TY - GEN
T1 - Evolution of the hot channel generated by femtosecond laser tagging in quiescent air
AU - New-Tolley, Matthew R.
AU - Shneider, Mikhail N.
AU - Miles, Richard B.
N1 - Publisher Copyright:
© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
PY - 2018
Y1 - 2018
N2 - The radial dynamics of hot channels generated from femtosecond laser breakdown in quiescent air are studied numerically. The evolution of the hot channel width is normalized by scaling quantities which allow us to account for the variations in ambient conditions, focal zone geometry and deposited energy in each simulation. The normalized curves collapse onto a single curve referred to as the universal or general solution. General solutions describing the evolution of the fluid variables (density, pressure and temperature) along the laser axis are also found. Approximations of the maximum hot channel width given in literature are compared to measurements obtained from the simulations.
AB - The radial dynamics of hot channels generated from femtosecond laser breakdown in quiescent air are studied numerically. The evolution of the hot channel width is normalized by scaling quantities which allow us to account for the variations in ambient conditions, focal zone geometry and deposited energy in each simulation. The normalized curves collapse onto a single curve referred to as the universal or general solution. General solutions describing the evolution of the fluid variables (density, pressure and temperature) along the laser axis are also found. Approximations of the maximum hot channel width given in literature are compared to measurements obtained from the simulations.
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U2 - 10.2514/6.2018-2990
DO - 10.2514/6.2018-2990
M3 - Conference contribution
AN - SCOPUS:85051749134
SN - 9781624105616
T3 - 2018 Aerodynamic Measurement Technology and Ground Testing Conference
BT - 2018 Aerodynamic Measurement Technology and Ground Testing Conference
PB - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 34th AIAA Aerodynamic Measurement Technology and Ground Testing Conference, 2018
Y2 - 25 June 2018 through 29 June 2018
ER -