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Applied Optics

Applied Optics


  • Vol. 22, Iss. 10 — May. 15, 1983
  • pp: 1573–1577

Spectroscopic investigation of laser-initiated low-pressure plasmas in atmospheric gases

R. A. Armstrong, R. A. Lucht, and W. T. Rawlins  »View Author Affiliations

Applied Optics, Vol. 22, Issue 10, pp. 1573-1577 (1983)

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Laser-initiated breakdown of N2, O2, and Ar has been investigated at sub-atmospheric pressures using a pulsed (10-nsec) Nd:yttrium aluminum garnet (Nd:YAG) laser at 1.06 μm. Breakdown thresholds have been determined from 3 to 760 Torr, and spectral analysis of the plasma emission has been carried out at 10 and 125 Torr over the 300–600-nm range. Sharp spectral features arising from highly excited singly and multiply charged ions are reported as well as an underlying continuum at intermediate pressure. Time-resolved measurements indicate a complex kinetic dynamic optical behavior.

© 1983 Optical Society of America

Original Manuscript: November 5, 1982
Published: May 15, 1983

R. A. Armstrong, R. A. Lucht, and W. T. Rawlins, "Spectroscopic investigation of laser-initiated low-pressure plasmas in atmospheric gases," Appl. Opt. 22, 1573-1577 (1983)

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