T.F. Heinz, M.M.T. Loy, et al.
Physical Review Letters
This Letter reports the first experimental observation of population inversion of a two-photon transition in NH3 using the adiabatic rapid-passage technique. The population inversion was demonstrated by the observation of stimulated two-photon gain and emission. By use of this technique, the two-photon population relaxation time T1 was measured. © 1978 The American Physical Society.
T.F. Heinz, M.M.T. Loy, et al.
Physical Review Letters
C.C. Chi, M.M.T. Loy, et al.
Applied Physics Letters
M.M.T. Loy, H. Zacharias
IQEC 1984
J. Pfab, J. Hager, et al.
Applied Physics B Photophysics and Laser Chemistry