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-µm QC distributed-feedback laser is locked to the side of a rovibrational resonance of nitrous oxide (N2 O) at 1176.61cm -1 . A stabilized frequency-noise spectral density of 42Hz/vHz has been measured at 100 kHz; the calculated laser linewidth is 12 kHz.
Revised: September 24, 2007 |
Published: December 15, 1999
Citation
Williams R.M., J.F. Kelly, J.S. Hartman, S.W. Sharpe, M. Taubman, J.L. Hall, and J.L. Hall, et al. 1999.Kilohertz linewidth from frequency-stabilized mid-infrared quantum cascade lasers.Optics Letters 24, no. 24:1844 - 1846.PNNL-SA-31468.