Uniform spike trains in optically injected quantum cascade oscillators.
Chaos
; 33(12)2023 Dec 01.
Article
en En
| MEDLINE
| ID: mdl-38127292
ABSTRACT
It has been experimentally and theoretically analyzed that noise-induced excitability in quantum well and quantum dot semiconductor laser systems usually produces sharp spike patterns of non-uniform amplitude. In this paper, we experimentally record that a quantum cascade oscillator injected externally with a monochromatic laser beam exhibits a series of highly uniform spike trains, which occur in the proximity of the saddle-node bifurcation. Theoretical analysis based on a properly designed single-mode rate equation model endowed with quantum noise reveals that this high uniformity has its primary origin in the ultrashort carrier lifetime of the quantum cascade laser gain medium that is typically close to 1 ps.
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Base de datos:
MEDLINE
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En
Revista:
Chaos
Asunto de la revista:
CIENCIA
Año:
2023
Tipo del documento:
Article
País de afiliación:
China