Propagation characteristics of coherent array beams from carbon dioxide waveguide lasers

H. J. Baker, D. R. Hall, A. M. Hornby, R. J. Morley, M. R. Taghizadeh, E. F. Yelden

Research output: Contribution to journalArticle

62 Citations (Scopus)

Abstract

The characteristics of coherent array beams generated by waveguide carbon dioxide laser structures have been investigated, with particular emphasis on their propagation and transformation properties. Methods of array beam generation are presented, and measurements of array beam quality are given through the use of the M2 parameter. Efficient transformation of an array beam from the antisymmetric to symmetric pattern is achieved through the use of a binary phase plate, and spatial filtering is shown to improve the beam quality at the expense of only a moderate loss of total beam power. Coherence effects in the near-field propagation of array beams are also explored.

Original languageEnglish
Pages (from-to)400-407
Number of pages8
JournalIEEE Journal of Quantum Electronics
Volume32
Issue number3
Publication statusPublished - Mar 1996

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