Comparison of models of CO2-laser impedance fluctuations

A.L.S. Smith, S. Moffatt

Research output: Contribution to journalArticle

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Abstract

There is a large opto-galvanic effect (OGE) in CO2-N2-He laser mixtures and this is exploited in laser frequency and power stabilisation systems. Two substantially different theories have been advanced to explain the effect. The two models are compared and it is concluded that the multi-step ionisation model is not adequate to describe the OGE in CO2 lasers, but the temperature perturbation or discharge cooling model describes the phenomenon with considerable precision.
Original languageEnglish
Pages (from-to)71-78
Number of pages7
JournalJournal of Physics D: Applied Physics
Volume17
Issue number1
DOIs
Publication statusPublished - 1984

Keywords

  • CO2-laser impedance fluctuations
  • opto-galvanic effect

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