title: High-Resolution Stark Spectroscopy in the nu(4) Band of NH(3) Using a Thin-Film Diode Laser.
abstract: Thin-film PbTe diode lasers are used for Doppler-limited Stark spectroscopy on the nu(4) vibration-rotation band of NH(3) in the 1545-1595-cm(-1) region. The lasers operate cw below 20 K and are frequency tuned by varying the diode current. The nu(4) excited state dipole moment of NH(3) is found to be about 1% less than the ground state value.
authors.forename: W H
authors.initials: WH
authors.lastname: Weber
authors.forename: P D
authors.initials: PD
authors.lastname: Maker
authors.forename: K F
authors.initials: KF
authors.lastname: Yeung
authors.forename: C W
authors.initials: CW
authors.lastname: Peters