Multiple Photon Pumping of Molecular Lasers: Frequency Tunable and Far IR Lasers.

摘要

This annual report describes research on two-photon pumping of molecular lasers operating on hot band transitions of the molecules and the associated nonlinear effects (Raman and hyper-Raman) that contribute to the gain spectrum of the molecular system. Accessing the hot bands of a molecule results in more lasing transitions that would otherwise be observed, and modifies the characteristics of the gain spectrum, i.e., the saturation, AC Stark shifts and width. Specific experiments described are: infrared-microwave pumping of NH3, infrared-infrared pumping on NH3, and hot band lasing in NH3. Ammonia has been chosen for study since absorption and laser assignments can readily be made for it. (Author)