Figure 2
From: Local oscillator port embedded field enhancement resonator for Rydberg atomic heterodyne technique
Field sensing enhancement resonator and the time dependent E-field response. (a) The resonator used in the experiments. A cylindrical cesium vapor cell is placed inside the resonator, and the entire structure is supported by PMI foam to reduce scattering. The resonator has two SMA ports. One is used as the LO signal input port, and the other is terminated to a 50 Ω load. (b) The purple curve is the simulated time dependent E-field strength for a probe located at the center of the resonator. The blue curve corresponds to the theoretical fit from Equation (6) with \(G=129.5\), \(f_{0}=638\) MHz, \(C=2.3\), and \(Q=79.16\). (c) Normalized theoretical time dependent E-field response for different Q values of 50, 75, and 100. For a given incident wave frequency, the higher the Q value, the longer the time is required to reach a steady state