Squeezing of Many-Atom Radiation in an Optical Cavity
Abstract
A method developed in terms of the SU(2) Lie algebra for the treatment of many-level atoms is now modified to treat the system of many two- level atoms interacting with a cavity field. Spectral attention is given to field squeezing up to fourth order. The effects of the number of atoms and detuning on the squeezing are investigated numerically for various initial field intensities. It is found that the atomic cooperation enhances the squeezing, while in the case of weak excitation, it weakens the squeezing. The possibility of constructing many-atom micromasers is suggested. In a micromaser, inversely populated atoms are injected one by one into an optical cavity to create stimulated emission. We suggest that a many-atom maser may be designed in which a group of active atoms instead of one is injected into the cavity at one time. If such many-atom micromasers are realized, it should be much easier to observe the field squeezing with strong initial excitation. It is known that a micromaser may be expected to produce low-noise microwave radiation. If the active medium consists of only one atom, its output power is too small to be useful for any practical purpose. If, however, the active medium consists of a group of atoms, or a large number of atoms is allowed to pass the cavity at one time, the output power of the micromaser will be greatly increased.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA215736
Entities
People
- Duoliang Lin
- Fu-li Li
- Thomas F. George
- Xiao-shen Li
Organizations
- University at Buffalo