Chaos-assisted nonresonant optical pumping of quadrupole-deformed microlasers

Chaos-assisted emission from asymmetric resonant cavity microlasers

The Onset of Chaos with a Quadrupole–quadrupole Interaction

The transition from order to chaos in atomic nuclei has been studied analytically and numerically using a quadrupole–quadrupole residual interaction. This interaction leads to chaotic behaviour, but the critical energy E C ≃ 12.6 MeV, corresponding to the onset of chaos, is higher than that of the experimental one.

Optical Pumping

T he rather odd term optical pumping means just what it says. In general “pumping” is a process of raising matter from lower to higher energy; for example, raising the potential energy of water hy moving it from an underground well to an elevated tank. In this article we shall he concerned w i t h the pumping of individual atoms from lower to higher states of internal energy. The word optical r...

Optical Pumping

Optical pumping uses light to affect the internal degrees of freedom of a sample of atoms in a vapor. These internal degrees of freedom are angular momentum states of the atomic ground state, which are populated when light is absorbed and emitted. This experiment reveals many phenomena of quantum mechanics including angular momentum selection rules, the density matrix, and resonance. Optical pu...

Chaos-assisted broadband momentum transformation in optical microresonators.

The law of momentum conservation rules out many desired processes in optical microresonators. We report broadband momentum transformations of light in asymmetric whispering gallery microresonators. Assisted by chaotic motions, broadband light can travel between optical modes with different angular momenta within a few picoseconds. Efficient coupling from visible to near-infrared bands is demons...