期刊
PHOTONICS RESEARCH
卷 11, 期 11, 页码 A97-A106出版社
CHINESE LASER PRESS
DOI: 10.1364/PRJ.489371
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This paper reports on the characteristics of a dual-mode circular-sided square microcavity laser, including irregular pulse packages and self-chaos operation, as well as chaotic characteristics for different longitudinal modes. The results show that the laser can provide stable parallel chaotic outputs.
Self-chaotic dual-mode and tri-mode microcavity lasers have been recently proposed and demonstrated for highspeed random number generation. Here, we report the characteristics of irregular pulse packages and self-chaos operation for a dual-mode circular-sided square microcavity laser. In addition to the mode interaction between the fundamental and first-order transverse modes, we observed irregular pulse packages due to the mode beating of near-degenerate modes for the first time to our best knowledge. Moreover, a successive route from periodic-one and periodic-three states to chaos is first experimentally illustrated by increasing injection current. The chaotic state is observed over a current range of 10 mA, and the maximum chaos effective bandwidth of 22.4 GHz is realized with a flatness of +/- 4 dB. Chaotic characteristics are also investigated for different longitudinal modes, which indicates that the self-chaotic microlaser can provide robust parallel chaotic outputs for practical application. (c) 2023 Chinese Laser Press
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