V. V. Valuev, V. G. Naumov, N. E. Sarkarov, P. A. Svotin, “Multimode operation of a cw CO<sub>2</sub> laser with an unstable cavity in the presence of phase inhomogeneities”, Kvantovaya Elektronika, 1998, Volume 25, Number 1,Pages <nobr>16

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Lasers

Multimode operation of a cw CO₂ laser with an unstable cavity in the presence of phase inhomogeneities

V. V. Valuev^a, V. G. Naumov^a, N. E. Sarkarov^b, P. A. Svotin^a

^a Troitsk Institute for Innovation and Fusion Research
^b Lomonosov Moscow State University, Faculty of Physics

Abstract: A numerical investigation of a fast-flow CO₂ laser with an unstable cavity and with phase inhomogeneities demonstrated that two stable mutimode lasing regimes can exist. In each regime the lasing characteristics depend continuously, in certain intervals, on the amplitude of phase inhomogeneities. The existence of two regimes may give rise to transients as a result of small changes in the cavity phase inhomogeneities.

PACS: 42.55.Lt, 42.60.Pk, 42.60.Lh

Received: 09.06.1997