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Title: Suppressing spatiotemporal lasing instabilities with wave-chaotic microcavities
Authors: Bittner, Stefan
Guazzotti, Stefano
Zeng, Yongquan
Hu, Xiaonan
Yilmaz, Hasan
Kim, Kyungduk
Oh, Sang Soon
Wang, Qi Jie
Hess, Ortwin
Cao, Hui
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Bittner, S., Guazzotti, S., Zeng, Y., Hu, X., Yilmaz, H., Kim, K., . . . Cao, H. (2018). Suppressing spatiotemporal lasing instabilities with wave-chaotic microcavities. Science, 361(6408), 1225-1231. doi:10.1126/science.aas9437
Journal: Science
Abstract: Spatiotemporal instabilities are widespread phenomena resulting from complexity and nonlinearity. In broad-area edge-emitting semiconductor lasers, the nonlinear interactions of multiple spatial modes with the active medium can result in filamentation and spatiotemporal chaos. These instabilities degrade the laser performance and are extremely challenging to control. We demonstrate a powerful approach to suppress spatiotemporal instabilities using wave-chaotic or disordered cavities. The interference of many propagating waves with random phases in such cavities disrupts the formation of self-organized structures such as filaments, resulting in stable lasing dynamics. Our method provides a general and robust scheme to prevent the formation and growth of nonlinear instabilities for a large variety of high-power lasers.
ISSN: 0036-8075
DOI: 10.1126/science.aas9437
Rights: © 2018 The Author(s). All rights reserved. This paper was published by American Association for the Advancement of Science in Science and is made available with permission of The Author(s).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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