Seesaw Maser Operation
- 1 February 1961
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 32 (2) , 317-320
- https://doi.org/10.1063/1.1735996
Abstract
Cross relaxation between adjacent intervals may be used to secure an advantage in maser operation comparable to that obtained by ``push‐pull'' pumping. Equations for the rate of change of populations in a scheme of four levels (A,B,C,D) when AC is pumped and cross relaxation takes place between BC, CD have been formulated, and the steady‐state condition corresponding to various assumptions regarding lattice relaxation times is discussed. In an experimental investigation of maser operation based on this scheme and using ruby as the active material, an inversion of 0.9:1 was obtained at a signal frequency of 14.5 kMc when pumping at 24.5 kMc.This publication has 4 references indexed in Scilit:
- Harmonic Spin Coupling in RubyPhysical Review B, 1960
- Paramagnetic Relaxation in Nickel FluosilicatePhysical Review B, 1959
- Three Level Spin Refrigeration and Maser Action at 1500 mc/secJournal of Applied Physics, 1959
- Electron Spin Relaxation Times in Gadolinium Ethyl SulfatePhysical Review B, 1957