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Waveguide laser resonators with a tilted mirror

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2 Author(s)
C. Hill ; Royal Signals and radar establishment, Malvern, england ; D. Hall

We present a multimode theory of square-bore waveguide laser resonators with one well-aligned and one tilted plane mirror. Our theoretical results for mode content, resonator loss, and power output agree reasonably well with experimental results from an RF-excited CO2laser with a 376 \times 1.5 \times 1.5 mm Al/Al2O3waveguide. The mode propagation coefficients of this structure are discussed. We model a diffraction grating as a plane mirror with a wavelength-dependent tilt, and conclude that previous single-mode theory has underestimated the severity of the line-hopping constraint on tunable waveguide CO2laser performance.

Published in:

IEEE Journal of Quantum Electronics  (Volume:22 ,  Issue: 7 )