High-Resolution Stark Spectroscopy in the nu(4) Band of NH(3) Using a Thin-Film Diode Laser.
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.
Weber
W H
WH
Maker
P D
PD
Yeung
K F
KF
Peters
C W
CW