We experimentally and numerically study the amplitude stability of an InAs/InGaAs quantum dot laser emitting simultaneously on ground states (GSs) and excited state (ESs) at center wavelengths of 1245 and 1168 nm, respectively. The stability is quantified by a spectrally resolved noise current analysis that is dependent on the laser injection current. We find a non-monotonic behavior of the amplitude noise which shows a reduction of up to 4 dB when the GS and ES emit simultaneously. Simulations based on a rate equation model confirm the reduction in noise and suggest the cascaded GS and ES carrier paths as the relevant underlying mechanism.

Intensity noise behavior of an InAs/InGaAs quantum dot laser emitting on ground states and excited states / Pawlus, R.; Columbo, L. L.; Bardella, P.; Breuer, S.; Gioannini, M.. - In: OPTICS LETTERS. - ISSN 0146-9592. - STAMPA. - 43:4(2018), pp. 867-870. [10.1364/OL.43.000867]

Intensity noise behavior of an InAs/InGaAs quantum dot laser emitting on ground states and excited states

Columbo, L. L.;Bardella, P.;Gioannini, M.
2018

Abstract

We experimentally and numerically study the amplitude stability of an InAs/InGaAs quantum dot laser emitting simultaneously on ground states (GSs) and excited state (ESs) at center wavelengths of 1245 and 1168 nm, respectively. The stability is quantified by a spectrally resolved noise current analysis that is dependent on the laser injection current. We find a non-monotonic behavior of the amplitude noise which shows a reduction of up to 4 dB when the GS and ES emit simultaneously. Simulations based on a rate equation model confirm the reduction in noise and suggest the cascaded GS and ES carrier paths as the relevant underlying mechanism.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11583/2707146
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