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Proceedings Paper

Parity-time symmetry breaking in optically coupled semiconductor lasers
Author(s): Joseph S. Suelzer; Yogesh N. Joglekar; Gautam Vemuri
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Paper Abstract

We experimentally demonstrate the realization of a parity-time (PT) symmetry breaking in optically coupled semiconductor lasers (SCLs). The two SCLs are identical except for a detuning between their optical emission frequencies. This detuning is analogous to the gain-loss parameter found in optical PT systems. To model the coupled SCLs, we employ the standard rate equations describing the electric field and carrier inversion of each SCL, and show that, under certain conditions, the rate equations reduce to the canonical, two-site PT- symmetric model. This model captures the global behavior of the laser intensity as the system parameters are varied. Overall, we find that this bulk system (coupled SCLs) provides an excellent test-bed to probe the characteristics of PT-breaking transitions, including the effects of time delay.

Paper Details

Date Published: 16 September 2016
PDF: 8 pages
Proc. SPIE 9920, Active Photonic Materials VIII, 99201M (16 September 2016); doi: 10.1117/12.2239487
Show Author Affiliations
Joseph S. Suelzer, Air Force Research Lab. (United States)
Indiana Univ.-Purdue Univ. Indianapolis (United States)
Yogesh N. Joglekar, Indiana Univ.-Purdue Univ. Indianapolis (United States)
Gautam Vemuri, Indiana Univ.-Purdue Univ. Indianapolis (United States)


Published in SPIE Proceedings Vol. 9920:
Active Photonic Materials VIII
Ganapathi S. Subramania; Stavroula Foteinopoulou, Editor(s)

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