Standard Article

Lasers, Gas

  1. J. Gary Eden1,
  2. Jürgen Eichler2

Published Online: 15 OCT 2004

DOI: 10.1002/3527600434.eap195.pub2

Encyclopedia of Applied Physics

Encyclopedia of Applied Physics

How to Cite

Eden, J. G. and Eichler, J. 2004. Lasers, Gas. Encyclopedia of Applied Physics. .

Author Information

  1. 1

    University of Illinois, Everitt Laboratory, Urbana Illinois, USA

  2. 2

    Technische Fachhochschule and Technische Universität Berlin, Germany

Publication History

  1. Published Online: 15 OCT 2004


This article reviews the characteristics of gas lasers that are chiefly responsible for their effectiveness as both scientific and industrial tool. The basic principles common to operation of all gas lasers and a few of their general properties are discussed. The lasers are categorized according to the pumping mechanisms: electron-impact excitation (copper and gold laser, Ar- and Kr-ion lasers), excitation transfer (He–Ne laser, He–Cd laser, CO2 laser), reactive collision lasers (excimer laser (ArF, KrF, XeCl, XeF, F2), chemical lasers (HF, COIL)), and other lasers in the far infrared, ultraviolet, and soft X-ray region. Selected applications of pulsed and continuous gas lasers are presented in material processing, marking and laser evaporation, microlithography, photochemical processing, stereolithography, and medicine.


  • gas laser;
  • pumping mechanisms;
  • He–Ne laser;
  • ion laser;
  • excimer laser;
  • CO2 laser;
  • laser application;
  • material processing;
  • laser medicine