Switching between ground and excited states by optical feedback in a quantum dot laser diode

Journal Article · Mon Sep 22 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4896576· OSTI ID:22350740

Virte, Martin ^[1]; Breuer, Stefan ^[2]; Sciamanna, Marc ^[3]; Panajotov, Krassimir ^[1]

---

1. Brussels Photonics Team, Department of Applied Physics and Photonics (B-PHOT TONA), Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels (Belgium)
2. Institute of Applied Physics, Technische Universität Darmstadt, 64289 Darmstadt (Germany)
3. Supélec, OPTEL Research Group, Laboratoire Matériaux Optiques, Photonique et Systèmes (LMOPS) EA-4423, 2 Rue Edouard Belin, F-57070 Metz (France)

We demonstrate switching between ground state and excited state emission in a quantum-dot laser subject to optical feedback. Even though the solitary laser emits only from the excited state, we can trigger the emission of the ground state by optical feedback. We observe recurrent but incomplete switching between the two emission states by variation of the external cavity length in the sub-micrometer scale. We obtain a good qualitative agreement of experimental results with simulation results obtained by a rate equation that accounts for the variations of the feedback phase.

• OSTI ID: 22350740
• Journal Information: Applied Physics Letters, Vol. 105, Issue 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
EMISSION
EXCITED STATES
FEEDBACK
GROUND STATES
QUANTUM DOTS
SEMICONDUCTOR LASERS
SIMULATION