Line stabilisation of slab waveguide CO2 lasers and the "Laser Signature" revisited

H. J. Baker, P. A. Field, F. Villarreal, S. D. Stratton, R. J. Ramirez, D. R. Hall

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The problem of line-hopping in a short cavity, slab waveguide CO 2 laser is studied by modelling of the laser signature and the experimental determination of laser spectra. It is shown that small increments of resonator length, less than 100 µm, significantly change the number of lines in the spectra and at a specific resonator length near 408.7 mm there is the possibility of single line operation. To reduce line-hopping and lock the laser to the 10P20 line, a 10th order, 2 dimensional grating has been laser engraved on one surface of the planar waveguide.

Original languageEnglish
Pages (from-to)55-59
Number of pages5
JournalProceedings of SPIE - the International Society for Optical Engineering
Volume5120
Publication statusPublished - 2003
EventXIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers - Wroclaw, Poland
Duration: 25 Aug 200230 Aug 2002

Keywords

  • Laser signature
  • Slab waveguide laser
  • Waveguide surface grating

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