9.5 dB relative intensity noise reduction in quantum cascade laser by detuned loading

The possibility of reducing the relative intensity noise (RIN) of a quantum cascade laser is demonstrated. By phase-dependent optical feedback from a short, piezo-controlled external cavity configuration, it is possible to achieve up to 9.5 dB of RIN reduction. These findings are consistently explai...

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Veröffentlicht in:	Electronics letters 2013-11, Vol.49 (24), p.1548-1550
Hauptverfasser:	Juretzka, C, Breuer, S, Drzewietzki, L, Schad, F, Carras, M, Elsäßer, W
Format:	Artikel
Sprache:	eng
Schlagworte:	alpha parameter detuned loading Dynamical laser instabilities noisy laser behavior Exact sciences and technology Fundamental areas of phenomenology (including applications) Holes laser cavity resonators laser feedback laser noise Laser optical systems: design and operation laser tuning Optics phase‐dependent optical feedback Photonics Physics quantum cascade laser quantum cascade lasers relative intensity noise reduction RIN reduction short piezocontrolled external cavity configuration
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Beschreibung
Zusammenfassung:	The possibility of reducing the relative intensity noise (RIN) of a quantum cascade laser is demonstrated. By phase-dependent optical feedback from a short, piezo-controlled external cavity configuration, it is possible to achieve up to 9.5 dB of RIN reduction. These findings are consistently explained by a detuned loading approach based on modifying the alpha parameter.
ISSN:	0013-5194 1350-911X 1350-911X
DOI:	10.1049/el.2013.2366