Gas-flow-induced controlled unidirectional operation of a CO(2) ring laser

Gas-flow-induced controlled unidirectional operation of a CO(2) ring laser

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 re...

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Veröffentlicht in:Optics letters 1985-01, Vol.10 (1), p.7-9
Hauptverfasser: Boulnois, J L, Bret, G, Cottin, P, Van Lerberghe, A, Agrawal, G P
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:0146-9592