| Issue |
J. Phys. Colloques
Volume 48, Number C7, Décembre 1987
1st International Laser M2P Conference
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|
|---|---|---|
| Page(s) | C7-589 - C7-589 | |
| DOI | https://doi.org/10.1051/jphyscol:19877143 | |
1st International Laser M2P Conference
J. Phys. Colloques 48 (1987) C7-589-C7-589
DOI: 10.1051/jphyscol:19877143
Laboratoire de Spectroscopie Hertzienne, Université des Sciences et Techniques de Lille, F-59655 Villeneuve d'Ascq Cedex, France
J. Phys. Colloques 48 (1987) C7-589-C7-589
DOI: 10.1051/jphyscol:19877143
GALVANIC CHAOS IN CO2 LASER DISCHARGES
A. BEKKALI, D. HENNEQUIN, D. DANGOISSE and P. GLORIEUXLaboratoire de Spectroscopie Hertzienne, Université des Sciences et Techniques de Lille, F-59655 Villeneuve d'Ascq Cedex, France
Abstract
Low-frequency instabilities (~ 5 kHz) have been observed on the output power of a dc-excited CO2 laser. By changing the gas mixture or the discharge current, they show up first as a sinewave and then as a chaotic modulation of the laser intensity. When the modulation amplitude reaches 100%, fast damped oscillations at the relaxation frequency of the laser are superimposed on them.