摘要: In three-level atoms the drastic modification of decay rates by driving field may occur in free space as soon one dynamic Stark level crosses a neighboring unperturbed atomic energy state. This leads to appearance spontaneous emission from former ground state lower or upper excited For an experimental realization we propose use cell with potassium (/sup 39/K) vapor magnetic driven on D1-transition circular polarized radiation Ti:sapphire dye laser.