Improved production of O2(a1Δ) in capacitively-coupled radio-frequency discharges

J. W. Zimmermann, B. S. Woodard, J. T. Verdeyen, D. L. Carroll, T. H. Field, W. C. Solomon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Experimental investigations of radio-frequency discharges in O 2/He/NO mixtures in the pressure range of 1-100 Torr and power range of 0.1-1.2 kW have indicated that O2(a1Δ) production is a strong function of geometry, excitation frequency, pressure and diluent ratio. The goal of these investigations was maximization of both the yield and flow rate (power flux) of O2(a1Δ) in order to produce favorable conditions for application to an electric oxygen-iodine laser (EOIL). At lower pressures, improvements in yield are observed when excitation frequency is increased from 13.56 MHz. As pressure is increased, increasing excitation frequency in the baseline configuration becomes detrimental, and yield performance is improved by reducing the discharge gap and increasing the diluent ratio. Numerous measurements of O2(a1Δ), oxygen atoms, and discharge excited states are made in order to describe the discharge performance dependent on various parameters.

Original languageEnglish (US)
Title of host publicationHigh Energy/Average Power Lasers and Intense Beam Applications II
DOIs
StatePublished - 2008
EventHigh Energy/Average Power Lasers and Intense Beam Applications II - San Jose, CA, United States
Duration: Jan 21 2008Jan 22 2008

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6874
ISSN (Print)0277-786X

Conference

ConferenceHigh Energy/Average Power Lasers and Intense Beam Applications II
Country/TerritoryUnited States
CitySan Jose, CA
Period1/21/081/22/08

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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