Collective ordering phenomena and instabilities of theAl27nuclear spin system in ruby
- 1 September 1979
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 20 (3), 1073-1080
- https://doi.org/10.1103/physreva.20.1073
Abstract
The dynamic properties of the ruby NMR laser are discussed from the point of view of synergetics. The authors present a theoretical approach together with the experimental verification. The cooperative features of the instabilities and the disorder-order transitions far from thermal equilibrium of the ruby NMR laser are described by means of order parameters and their dynamic equations, which are generalized Bloch equations. The heat-reservoir description of the conventional spin dynamics in ruby is thereby taken into account. The theory is applied to the free-running NMR laser with its threshold, the critical narrowing of cw NMR lines below threshold, and the steady-state output above threshold. The theory is then extended to the driven NMR laser where an external resonant rf field is applied to form, together with the self-induced radiation field, a competitive- or cooperative-field configuration. The authors present data concerning bistability and hysteresis of the driven NMR laser; in particular, its first-order-type phase transitions from a competitive- to a cooperative-field configuration are discussed. Finally, a novel pulsation mode of the ruby NMR laser is described.Keywords
This publication has 11 references indexed in Scilit:
- Ruby NMR laser: A phenomenon of spontaneous self-organization of a nuclear spin systemPhysical Review A, 1978
- Optical bistability: A self-consistent analysis of fluctuations and the spectrum of scattered lightPhysical Review A, 1978
- Solid-State Nuclear Spin-Flip Maser Pumped by Dynamic Nuclear PolarizationPhysical Review Letters, 1977
- SynergeticsPublished by Springer Nature ,1977
- Cooperative effects and bistability for resonance fluorescenceOptics Communications, 1976
- Differential Gain and Bistability Using a Sodium-Filled Fabry-Perot InterferometerPhysical Review Letters, 1976
- Radiation Damping in Nuclear Magnetic ResonancePhysical Review B, 1959
- Radiation instability in nuclear magnetic resonance experimentsNuclear Instruments, 1957
- Effects of Radiation Damping on Spin DynamicsJournal of Applied Physics, 1957
- Radiation Damping in Magnetic Resonance ExperimentsPhysical Review B, 1954