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Proceedings Paper

Quantum-limited linewidth in THz quantum cascade lasers
Author(s): Miriam Serena Vitiello; Luigi Consolino; Saverio Bartalini; Andrea Taschin; Alessandro Tredicucci; Massimo Inguscio; Paolo De Natale
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Paper Abstract

Quantum cascade lasers (QCLs) are powerful testing grounds for the fundamental physical parameters determined by their quantum nature. The associated wealth of unique physical properties makes the QCL a subject of extensive research, especially across the far-infrared, where the electron-phonon relaxation dynamics, the gain mechanisms and the related intrinsic QCL features need to be extensively investigated. Here, we report a complete overview of the frequency-noise power spectral density of a THz QCL, giving an experimental and analytical evaluation of its intrinsic linewidth and a full investigation of the physics beyond it, offering a new perspective of use of ultra-narrow THz QCL sources as a metrological grade tool for a widespread range of photonic applications.

Paper Details

Date Published: 4 February 2013
PDF: 9 pages
Proc. SPIE 8631, Quantum Sensing and Nanophotonic Devices X, 863109 (4 February 2013); doi: 10.1117/12.2006029
Show Author Affiliations
Miriam Serena Vitiello, CNR, Istituto Nazionale di Ottica and LENS (Italy)
NEST, CNR, Istituto Nanoscienze and Scuola Normale Superiore (Italy)
Luigi Consolino, CNR, Istituto Nazionale di Ottica and LENS (Italy)
Saverio Bartalini, CNR, Istituto Nazionale di Ottica and LENS (Italy)
Andrea Taschin, CNR, Istituto Nazionale di Ottica and LENS (Italy)
Alessandro Tredicucci, NEST, CNR Istituto Nanoscienze and Scuola Normale Superiore (Italy)
Massimo Inguscio, CNR, Istituto Nazionale di Ottica and LENS (Italy)
Univ. degli Studi di Firenze (Italy)
Paolo De Natale, CNR, Istituto Nazionale di Ottica and LENS (Italy)


Published in SPIE Proceedings Vol. 8631:
Quantum Sensing and Nanophotonic Devices X
Manijeh Razeghi, Editor(s)

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