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Conferences > NLDOS > 1992 > WB > WB2

Pattern formation in a multimode CO2 laser

D. Hennequin, C. Lepers, E. Louvergneaux, D. Dangoisse, and P. Glorieux

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Abstract

The spatio-temporal dynamics of a Perot-Fabry CO2 laser is experimentally studied. The cavity is composed of two mirrors with a lens inserted between them. This system permits to reach very large Fresnel numbers by adjusting the location of the lens, and so to vary the frequency spacing between transverse modes on a wide range [1], typically from almost 0 to 20 MHz in our case, while the free spectral range is 80 MHz. Two other control parameters are available: the pump parameter and the cavity length.

© 1992 Optical Society of America

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