DPG Phi
Verhandlungen
Verhandlungen
DPG

Heidelberg 2015 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

Q: Fachverband Quantenoptik und Photonik

Q 31: Poster: Quantum Optics and Photonics II

Q 31.73: Poster

Tuesday, March 24, 2015, 17:00–19:00, C/Foyer

Relative intensity noise reduction of a quantum dot laser subject to optical feedbackMariangela Gioannini2, •Robert Pawlus1, Lukas Drzewietzki1, Sébastien Hartmann1, Wolfgang Elsäßer1, and Stefan Breuer11Institute of Applied Physics, Technische Universität Darmstadt, Germany — 2Dipartimento di Elettronica, Politecnico di Torino, Italy

We study the improvement of relative intensity noise (RIN) of an InAs/InGaAs quantum dot (QD) laser by optical feedback (OFB). The laser emits simultaneously at the ground-state (GS) and the excited-state (ES) wavelengths. Recently, switching between GS and ES wavelengths by OFB has been investigated both experimentally and by numerical modeling (M. Virte et al. Appl. Phys. Lett. 105, 121109, 2014). An improvement in RIN by OFB has also recently been reported for a quantum cascade laser (C. Juretzka et al., Electron. Lett. 49, 1548, 2013). Here, we study the influence of GS- and ES-selective OFB on the RIN and emission-state transitions of a QD laser both experimentally and by simulations. Experiments yield a significant RIN reduction when spectrally-selective GS or ES OFB is applied as well as for GS+ES OFB. The observed RIN improvement and emission-state transitions are discussed by means of numerical modeling.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2015 > Heidelberg