Free-running frequency stability of mid-infrared quantum cascade lasers

Free-running frequency stability of mid-infrared quantum cascade lasers

The intrinsic frequency fluctuations of two single-mode quantum cascade (QC) distributed-feedback lasers operating continuously at a wavelength of 8.5 mum are reported. A Doppler-limited rovibrational resonance of nitrous oxide is used to transform the frequency noise into measurable intensity fluct...

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Veröffentlicht in:Optics letters 2002-02, Vol.27 (3), p.170-172
Hauptverfasser: Myers, T L, Williams, R M, Taubman, M S, Gmachl, C, Capasso, F, Sivco, D L, Baillargeon, J N, Cho, A Y
Format: Artikel
Sprache:eng
Schlagworte:
ENGINEERING
FLUCTUATIONS
FREQUENCY CONTROL
LASERS
NITROUS OXIDE
RESONANCE
STABILITY
WAVELENGTHS
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Beschreibung
Zusammenfassung:The intrinsic frequency fluctuations of two single-mode quantum cascade (QC) distributed-feedback lasers operating continuously at a wavelength of 8.5 mum are reported. A Doppler-limited rovibrational resonance of nitrous oxide is used to transform the frequency noise into measurable intensity fluctuations. The QC lasers, along with recently improved current controllers, exhibit a free-running frequency stability of 150 kHz over a 15-ms time interval.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.27.000170