title: Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers.
abstract: 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.
authors: R M
authors: RM
authors: Williams
authors: J F
authors: JF
authors: Kelly
authors: J S
authors: JS
authors: Hartman
authors: S W
authors: SW
authors: Sharpe
authors: M S
authors: MS
authors: Taubman
authors: J L
authors: JL
authors: Hall
authors: F
authors: F
authors: Capasso
authors: C
authors: C
authors: Gmachl
authors: D L
authors: DL
authors: Sivco
authors: J N
authors: JN
authors: Baillargeon
authors: A Y
authors: AY
authors: Cho