Experimental research on chaos operation in a CO2 laser caused by the transverse effect of the light fields

Nanpeng Chen

doi:10.1117/12.2294835

1 July 1990 Experimental research on chaos operation in a CO₂ laser caused by the transverse effect of the light fields

Nanpeng Chen

Proceedings Volume 1230, International Conference on Optoelectronic Science and Engineering '90; 12305I (1990) https://doi.org/10.1117/12.2294835
Event: The Marketplace for Industrial Lasers 1990, 1990, Chicago, IL, United States

Abstract

The instabilities of cw-0O2 laser have been the object of extensive investigation in the field of laser instabilities and chaos. It is well known that a chaos operation of a system requires at least three dynamical variables in phase-space. Therefore, the CO2 lasers used in chaos investigation are all supplied with either modulation or feedback to enlarge the phase-space dimensionality. Recently, it is come to be known that some instabilities maybe result from the transverse distribution of laser fiedl. When the transverse freedom degree is considered, theoatical analysis shows that the Maxwell-Bloch equations change obviously. Different simplified models have been discussed priliminarily, but to data no clear experimental demonstration has been given. Here we report our experimental studies on instabilities caused by the transverse effects. Chaos operation are first observed in a single-lingitudinal, multi-transverse mode cw-0O2 laser in the abscence of any kinds of modulation or feedback. The laser output evolves from stability to chaos along different routes when the laser parameter are changed. Our experiment shows that the transverse distribution of light field and population inversion is an important factor in causing laser instabilities.

Citation Download Citation

Nanpeng Chen "Experimental research on chaos operation in a CO₂ laser caused by the transverse effect of the light fields", Proc. SPIE 1230, International Conference on Optoelectronic Science and Engineering '90, 12305I (1 July 1990); https://doi.org/10.1117/12.2294835

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