Low-pressure gas breakdown with CO2 laser radiation
- 1 October 1973
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 23 (7) , 392-394
- https://doi.org/10.1063/1.1654931
Abstract
The threshold power for CO2‐laser‐induced gas breakdown in helium has been studied at many pressures in the range of 50–700 Torr by using laser pulses of two different lengths. These measurements show that electron diffusion losses play an important role at these pressures. The experimental data can be quantitatively accounted for by taking into account both diffusion losses and the finite length of the laser pulse. In addition, it is found that the breakdown threshold power is significantly lowered when longer laser pulses are used and that elastic losses appear to play an important role at pressures above 500 Torr.Keywords
This publication has 6 references indexed in Scilit:
- Significant loss mechanisms in gas breakdown at 10.6 μJournal of Applied Physics, 1973
- Laser-induced gas breakdown in the presence of preionizationApplied Physics Letters, 1973
- Magnetic-Field-Dependent Breakdown of CO2-Laser-Produced PlasmaApplied Physics Letters, 1972
- Ohmic contacts on semiconductors using indium amalgamJournal of Physics D: Applied Physics, 1972
- Thermal conductivity of metals at high temperatures by the Jain and Krishnan method VI. RhodiumJournal of Physics D: Applied Physics, 1972
- Gas-Breakdown Dependence on Beam Size and Pulse Duration with 10.6-μ Wavelength RadiationApplied Physics Letters, 1971