K(2) OPTICALLY PUMPED LASERS USING TEMPORALLY DELAYED PULSES IN THE COUNTERINTUITIVE SEQUENCE

We report increased stimulated emission on some optically pumped laser transitions coupled to suppressed stimulated emission on other transi tions when a weak Stokes laser beam and a strong pump laser beam inter act with K2 molecules in the counterintuitive sequence. The Stokes las er photons begins to interact with the K2 molecules 3 to 4 ns before t he pump laser phtons can interact with the K2 molecules. Both the Stok es and the pump laser pulses last for approximately 5 ns and the suppr essed and enhanced stimulated emissions coincide with the pump laser p ulse. The stimulated emissions described in this paper propagate paral lel to the Stokes and pump laser beams.