The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.
Reversing the pump dependence of a laser at an exceptional point
Open accessAbstract
When two resonant modes in a system with gain or loss coalesce in both their resonance position and their width, a so-called exceptional point occurs, which acts as a source of non-trivial physics in a diverse range of systems. Lasers provide a natural setting to study such non-Hermitian degeneracies, as they feature resonant modes and a gain material as their basic constituents. Here we show that exceptional points can be conveniently induced in a photonic molecule laser by a suitable variation of the applied pump. Using a pair of coupled microdisk quantum cascade lasers, we demonstrate that in the vicinity of these exceptional points the coupled laser shows a characteristic reversal of its pump dependence, including a strongly decreasing intensity of the emitted laser light for increasing pump power.
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Metadata
- Authors
- Brandstetter, M., Liertzer, M., Deutsch, C., Klang, P., Schöberl, J., Türeci, H. E., Strasser, G., Unterrainer, K., & Rotter, S.
- Venue
- Nature Communications
- Published
- 2014-06-13
- Volume
- 5
- Issue
- 1
- Pages
- 4034-4034
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W2110821423
- Cited by
- 508
- References
- 42
- FWCI
- 26.29
- Type
- journal article
- Language
- en
- Open access
- hybrid
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