Fig. 2
From: Efforts towards a low-temperature-sensitive physics package for vapor cell atomic clocks
a Structure of the magnetron-type cavity, b Simulated result of the microwave magnetic field with a glass cell inside, c Zeeman transition strengths between the hyperfine levels F = 1 and F = 2 of 87Rb ground state, d The observed Ramsey fringe. The sequence of the Ramsey interrogation is set as follows: pumping pulse duration Tp = 0.4 ms, microwave pulse duration Tµ = 0.4 ms, Ramsey time T = 3.5 ms, and optical detecting pulse duration Td = 0.2 ms