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Updated: Jun 20, 2026
09:38
Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
Published on: December 18, 2015
Gas-flow-induced controlled unidirectional operation of a CO(2) ring laser
Optics Letters
|September 3, 2009
Abstract:
It is shown experimentally and theoretically that axial gas flow leads to controlled unidirectional operation of a CO(2) ring laser. The direction of emission, clockwise or counterclockwise, can be selected by a slight tuning of the laser cavity (~1% of the free spectral range). The flow velocity required for complete mode extinction depends on the relative magnitudes of the Doppler and homogeneous line widths and is ~10 m/sec when the two are comparable.
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