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Nonreciprocal lasing in topological cavities of arbitrary geometries
Abstract
Topological lasing: Resonant cavities that confine light are crucial components of lasers. Typically, these cavities are designed to high specification to get the best possible output. That, however, can limit their integration into photonic devices and optical circuits. Bahari et al. fabricated resonant cavities of arbitrary shape within a hybrid photonic crystal structure. The confinement of light to topologically protected edge states resulted in lasing at communication wavelengths. Relaxing the resonant cavity design criteria should be useful in designing photonic devices. Science , this issue p. 636
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In the optical frequency domain, magneto-optical effects are typically weaker by at least 2 to 3 orders of magnitude than in the microwave domain, but a small topological band gap is still enough to provide topological features in narrow-band phenomena such as topological laser operation.
“In this domain, the magneto-optical effects are typically weaker by at least 2 to 3 orders of magnitude, but the material is continuously being improved (Onbasli et al., 2016) and enhanced (Luo et al., 2016).Even though the resulting topological band gap is correspondingly smaller than that in the microwave range, such a small bandwidth is still enough to provide topological features in narrow”
From Topological photonics (2019) · cites this paper as Bahari et al., 2017
Two-dimensional topological edge state lasers, intrinsically non-Hermitian systems, have been observed recently.
“Finally, two-dimensional topological edge state lasers (Bahari et al., 2017;Bandres et al., 2018;Harari et al., 2018), intrinsically non-Hermitian systems, have been observed recently”
From Topological photonics (2019) · cites this paper as Bahari et al., 2017
Lasing of modes on the edge was observed despite the small width of the magneto-optically induced band gap and the comparatively large linewidth of the bulk modes.
“In spite of the small width of the magneto-optically induced band gap, and the comparatively large linewidth of the bulk modes, lasing of modes on the edge was observed.”
From Topological photonics (2019) · cites this paper as Bahari et al. (2017)
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Metadata
- Authors
- Bahari, B., Ndao, A., Vallini, F., El Amili, A., Fainman, Y., & Kanté, B.
- Affiliations
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093, USA.
- Venue
- Science
- Published
- 2017-11-03
- Volume
- 358
- Issue
- 6363
- Pages
- 636-640
- ISSN
- 0036-8075
- 1095-9203
- Cited by
- 770
- References
- 5
- Language
- en
- Funders
- National Science Foundation (award340704, ECCS-1554021)
- Office of Naval Research (award340703, N00014-13-1-0678, award352700, N00014-17-1-2671)
- U.S. Department of Energy (award352699, EE0007341)
- Semiconductor Research Corporation (award352305, CCF-1640227)
- Army Research Office (award352303, W911NF-16-1-0245)
- NSF (award352301, ECCS-1405234, award352302, ECCS-1507146, award352304, ECCS-1644647)
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