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Theory of Laser Radiation

  • W. Thirring
Conference paper
Part of the Supplementa book series (FEWBODY, volume 2/1965)

Abstract

I was asked to start this sekond week nonrelativistically with a theory of lasers. By this I mean the description of radiation in interaction with matter of negative (absolute) temperature. It is clear that for a treatment satisfactory for theorists we have to idealize the situation. Firstly we replace the atoms by two-level systems (spins) and ignore the other levels. Secondly we start with matter of T = -0 ∞ (all spins up, e.g. in the state of higher energy), which means we consider flashing ruby-lasers rather than continous Ne-He-lasers. Finally we shall ignore the atomistic structure of matter and treat it as a continuum.

Keywords

Laser Radiation Coherent State Interference Term Laser Material Absolute Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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General References

  1. Singer, J. R., Masers, New York: Wiley and Sons 1959.Google Scholar
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Copyright information

© Springer Science + Business Media, LLC 1965

Authors and Affiliations

  • W. Thirring
    • 1
  1. 1.Universität WienAustria

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