Modeling of multi-transversal mode lasing in static alkali vapor lasers

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


In the present paper we use a simple optical model to describe multi-transverse mode operation of alkali lasers. The model is based on calculations of the pump and laser beam intensities in the gain medium, where the laser beam intensity is a linear combination of the azimuthally-symmetric Laguerre-Gaussian modes. The model was applied to optically pumped cesium vapor laser studied experimentally and theoretically previously [Cohen, T., Lebiush, E., Auslender, I., Barmashenko B.D., and Rosenwaks, S., Opt. Exp. 24, 14374 (2016)]. It was found in our calculations that for low pump power and small pump beam radii, only fundamental lasing mode oscillates, just as shown experimentally in this study. However, for higher pump powers and larger pump beam diameters, several transverse modes participate in oscillation. The number and intensities of the oscillating modes as a function of the pump beam power and radius are found. In order to check the validity of the model, it was applied to pulsed static Cs DPAL [Zhdanov, B. et al, Electron. Lett. 44, 582(2008)] with the pump beam radius much larger than that of the fundamental laser mode and constant gas temperature. The model predicts linear dependence of the laser power on the pump power, the values of the former being in agreement with the experimental results.

Original languageEnglish
Title of host publicationHigh-Power Lasers
Subtitle of host publicationTechnology and Systems, Platforms, and Effects
EditorsHarro Ackermann, Willy L. Bohn, David H. Titterton
ISBN (Electronic)9781510613362
StatePublished - 5 Dec 2017
EventHigh-Power Lasers: Technology and Systems, Platforms, and Effects 2017 - Warsaw, Poland
Duration: 11 Sep 201714 Sep 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


ConferenceHigh-Power Lasers: Technology and Systems, Platforms, and Effects 2017


  • Cs DPALs
  • gas lasers
  • static DPALs

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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