The setup for CRDS consists of an analyte in one of these systems where intensity exponentially decays over the ringdown time. 2012 (-5[1])Nobel Prize in Physics winner Serge Haroche recreated Schrödinger’s cat by firing Rydberg atoms into one of these systems. (-5[1])RF signals are input and output into a pair of these systems called the catcher and buncher of a klystron tube. (-5[1])A high-finesse one of these systems that selectively transmits light composes a Fabry–Pérot (-5[1])interferometer. (-5[6])A prototypical model of a blackbody is as (-5[1])one of these (10[1])systems (10[1])with a small hole cut into it. (-5[7])A laser (10[1]-5[2])contains a resonant one of these (10[1])systems (-5[1])formed out of (10[1])two (10[3])mirrors (10[2])that surrounds (-5[1])its gain medium. (10[2]-5[1])For 10 points, (-5[1])name these physical (10[1])systems consisting of a hollow space (10[1])in (10[1])which (-5[1])confined (-5[1])photons (10[1]-5[2])can bounce (-5[1])back and (-5[1])forth. (-5[1])■END■ (10[5]0[61])