Transverse pattern modifications in a stable apertured laser resonator

Boaz Lissak, Shlomo Ruschin

Research output: Contribution to journalArticlepeer-review


The effects of hard apertures on the transversal mode distribution and the output near and far field distributions are investigated both theoretically and experimentally. Wavefronts propagating in different directions inside a CO2 laser cavity were measured at the same plane and found to have different transversal amplitude profiles. The influence of intracavity aperture’s location and diameter on the near field distribution and far field beam quality were measured and calculated. Quantitative figures of merit are introduced to evaluate the departure of the transversal mode patterns from ideal Gaussians.

Original languageEnglish
Pages (from-to)767-771
Number of pages5
JournalApplied Optics
Issue number6
StatePublished - 20 Feb 1990


  • Lasers
  • Resonators


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