Accession Number:

ADA064549

Title:

Effects of Cooperative Atomic Behavior on Lasers.

Descriptive Note:

Annual rept. Oct 77-Sep 78,

Corporate Author:

TECHNION - ISRAEL INST OF TECH HAIFA

Personal Author(s):

Report Date:

1978-09-01

Pagination or Media Count:

26.0

Abstract:

The behavior of a pumped collection of identical three level atoms in which both the upper pair of levels and the lower pair of levels are coupled to resonant cavity-modes is analyzed. The cases of both incoherent pumping and coherent pumping are considered, and turn out to be qualitatively different. For the case of incoherent pumping, field oscillation can be sustained in only one of the modes, the behavior of the system being that of the familar three-level laser, with oscillation occuring between either the upper pair or lower pair of levels, depending on the relaxation constants. For the case of coherent pumping, however, oscillation can be obtained in both modes. Furthermore, this oscillation is different from that found in a parametric oscillator in the sense that, under certain conditions of operation, the phases of oscillation in the two cavities are independent. The potential application of such behavior is pointed out. Author

Subject Categories:

  • Lasers and Masers

Distribution Statement:

APPROVED FOR PUBLIC RELEASE