Patent ID: 9608396
Date: 2017-03-28
CPC Classifications: H01S

Claim:
1. A maser assembly including: a pump light source; a maser material including molecules that are excited through the absorption of light from the pump light source, and which subsequently transfer via intersystem crossing (ISC) into the sublevels of their triplet ground states, so causing a population inversion between two sublevels of their triplet ground states, the said two sublevels being an upper maser level and a lower maser level and the remaining sublevel being an auxiliary level; an electromagnetic structure in which the masing material is disposed, and which supports a microwave mode that is both resonant in frequency with and magnetically coupled to the transition between the upper and lower maser levels, this transition being a maser transition; and where energy is supplied to the microwave mode through stimulated emission across the maser transition at such a rate as to exceed the mode's electromagnetic losses, the microwave mode being a maser mode; where the maser assembly is characterized by satisfying where: P κ Θ Θ θ f f Δf γ≡−g Λ≡√{square root over (μ Q σ P 1/τ T T T