Measuring and modelling the beam quality in cesium DPALs

Ilya Auslender, Eyal Yacoby, Boris D. Barmashenko, Salman Rosenwaks

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


We report on recent experimental and theoretical studies of cesium laser, where we focused on the beam propagation factor M2 in flowing-gas Cs DPALs with stable optical resonators and of its dependence on the resonator geometry. The measured results were modeled by multi-transverse-mode model [Auslender et al., Opt. Express 25, 19767 (2017)]. Conditions for substantial improvement of the output laser beam quality, reducing M2 to close to unity, are found. In particular we show how changing the length of the resonator, and/or the radius of curvature of the high reflection mirror, leaving all other parameters of the laser unchanged, makes it possible to control the beam quality.

Original languageEnglish
Title of host publicationHigh Power Lasers
Subtitle of host publicationTechnology and Systems, Platforms, Effects III
EditorsHarro Ackermann, Willy L. Bohn, David H. Titterton
ISBN (Electronic)9781510630277
StatePublished - 1 Jan 2019
EventHigh Power Lasers: Technology and Systems, Platforms, Effects III 2019 - Strasbourg, France
Duration: 11 Sep 201912 Sep 2019

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, Effects III 2019


  • Cs DPALs
  • gas lasers

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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