Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers

Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers

Frequency stabilization of mid-IR quantum cascade (QC) lasers to the kilohertz level has been accomplished by use of electronic servo techniques. With this active feedback, an 8.5-microm QC distributed-feedback laser is locked to the side of a rovibrational resonance of nitrous oxide (N(2) O) at 117...

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Veröffentlicht in:Optics letters 1999-12, Vol.24 (24), p.1844-1846
Hauptverfasser: Williams, R M, Kelly, J F, Hartman, J S, Sharpe, S W, Taubman, M S, Hall, J L, Capasso, F, Gmachl, C, Sivco, D L, Baillargeon, J N, Cho, A Y
Format: Artikel
Sprache:eng
Schlagworte:
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
EXPERIMENTAL DATA
INFRARED SPECTRA
KHZ RANGE
LASER RADIATION
LINE WIDTHS
NITROGEN OXIDES
STABILIZATION
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Beschreibung
Zusammenfassung:Frequency stabilization of mid-IR quantum cascade (QC) lasers to the kilohertz level has been accomplished by use of electronic servo techniques. With this active feedback, an 8.5-microm QC distributed-feedback laser is locked to the side of a rovibrational resonance of nitrous oxide (N(2) O) at 1176.61cm (-1) . A stabilized frequency-noise spectral density of 42Hz/ radicalHz has been measured at 100 kHz; the calculated laser linewidth is 12 kHz.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.24.001844