A spectrometer includes: (1) a housing defining a volume into which an analyte gas is introduced, the analyte gas including a chiral component; (2) a microwave generator coupled to the housing and configured to apply a microwave pulse to the analyte gas, the microwave pulse being polarized along a first direction; (3) an electric field generator coupled to the housing and configured to apply a switched electric field to the analyte gas, the electric field being oriented along a second direction different from the first direction; (4) a phase-sensitive microwave detector coupled to the housing and configured to detect an induced microwave emitted by the analyte gas, the induced microwave being polarized along a third direction different from the first direction and the second direction; and (5) an analyzer coupled to the phase-sensitive microwave detector and configured to detect an enantiomer of the chiral component based on a phase of the induced microwave.