According to the
resonant cavity system with the adjustable resonant frequency and the regulation and control method of the
resonant cavity system, two reflectors are adopted as a
resonant cavity body, a lens and a
beam splitting piece are adopted for excitation
coupling, the axial direction of the reflectors and the axial direction of the lens are mutually orthogonal, 45-degree angles are formed between the reflectors and the axial direction of the
beam splitting piece, and the incident direction of electromagnetic
waves is the axial direction of the lens. External
Gaussian beams are bunched in the center of the
beam splitting piece through the lens, and then the propagation direction of electromagnetic
waves is deflected by 90 degrees through the beam splitting piece, so that
resonance is generated. The two reflectors are installed on the stepping piezoelectric
actuator, the distance between the reflectors is adjusted through the
actuator, and whether the resonant cavity reaches a resonant state or not is observed through a
perturbation and observation method, so that closed-loop adjustment of the resonant frequency of the resonant cavity is achieved. According to the invention, the resonant frequency of the resonant cavity is accurately regulated and controlled, so that the performance of the
electron spin
resonance spectrometer is improved.