A problem in coherent spontaneous molecular radiation

Игорь Сергеевич Осадько

D.C. Lainé

It is pointed out that the technique used by Dicke and Romer of pulse excitation of a volume of gas to a coherently radiating state can be applied to high-resolution spectroscopy using molecular beams. A two-cavity maser-like system without a state separator is proposed, where the molecular beam is polarized by a pump field in the first cavity and the coherent spontaneous emission radiated in a second pick-up cavity detected by a superheterodyne receiver.

Leonid A. Shelepin

Jordi Martorell, N. M. Lawandy

We observed the change in fluorescence lifetime from a molecular dye embedded in a colloidal suspension of polystyrene spheres when the mean separation between spheres remains less than the wavelength of emission. At high densities of colloidal particles the spontaneous emission is inhibited, while as the density of colloidal particles is lowered the spontaneous emission is enhanced. This phenomenon is interpreted in terms of coherent interference from the electric field radiated by the molecular dipole and the reradiated field from the dielectric spheres.

V. A. Morozov

Charles Hard Townes