title: Sub-Doppler resolution limited Lamb-dip spectroscopy of NO with a quantum cascade distributed feedback laser.
abstract: A quantum cascade distributed feedback laser operating at 5.2 microm is used to obtain sub-Doppler resolution limited saturation features in a Lamb-dip experiment on the R(13.5)1/2 and R(13.5)3/2 transitions of NO. The dips appear as transmission spikes with full widths of ~ 4.3 MHz. At this resolution the 73 MHz _-doubling of the R(13.5)3/2 line, which is normally obscured by the 130 MHz Doppler broadening, is easily resolved.
authors.forename: J
authors.initials: J
authors.lastname: Remillard
authors.forename: D
authors.initials: D
authors.lastname: Uy
authors.forename: W
authors.initials: W
authors.lastname: Weber
authors.forename: F
authors.initials: F
authors.lastname: Capasso
authors.forename: C
authors.initials: C
authors.lastname: Gmachl
authors.forename: A
authors.initials: A
authors.lastname: Hutchinson
authors.forename: D
authors.initials: D
authors.lastname: Sivco
authors.forename: J
authors.initials: J
authors.lastname: Baillargeon
authors.forename: A
authors.initials: A
authors.lastname: Cho