Abstract
We report on a systematic investigation of the stability of a laser subjected to delayed electro-optical feedback. Such a laser roughly displays three operational intervals of stability, which we characterize using high-resolution stability charts and a video. Contrary to current belief, we find delays smaller than to strongly “clean complexity,” namely, to prevent chaos and periodic pulsations with many spikes. In contrast, complex pulsations and chaos are significantly enhanced for . In this range, one finds a complex alternation of periodic and chaotic phases, which are sensitive to the delay duration.
© 2016 Optical Society of America
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