Photon-statistics excitation spectroscopy of a quantum-dot micropillar laser
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We introduce photon-statistics excitation spectroscopy and exemplarily apply it to a quantum-dot micropillar laser. Both the intensity and the photon number statistics of the emission from the micropillar show a strong dependence on the photon statistics of the light used for excitation of the sample. The results under coherent and pseudothermal excitation reveal that a description of the laser properties in terms of mean input photon numbers is not sufficient. It is demonstrated that the micropillar acts as a superthermal light source when operated close to its threshold. Possible applications for important spectroscopic techniques are discussed.
Kazimierczuk , T , Schmutzler , J , Aßmann , M , Schneider , C , Kamp , M , Höfling , S & Bayer , M 2015 , ' Photon-statistics excitation spectroscopy of a quantum-dot micropillar laser ' Physical Review Letters , vol 115 , no. 2 , 027401 . DOI: 10.1103/PhysRevLett.115.027401
Physical Review Letters
© 2015 American Physical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at http://dx.doi.org/10.1103/PhysRevLett.115.027401
The Dortmund group acknowledges support by the DFG via TRR 142 and research Grant DFG 1549/18-1. The group at Würzburg University acknowledges support by the State of Bavaria.
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