Аннотации:
The paper presents a model of an open resonator exhibiting a single high-Q eigen oscillation within a one-octave frequency
band. The resonator is synthesized by integrating a diffraction radiation antenna, which comprises a segment of a dielectric waveguide
above a metal substrate with a diffraction grating, into a system of flat reflectors aligned parallel to the wave fronts of surface and
bulk waves generated by the antenna. A pulse response with an amplitude-frequency characteristic featuring one pronounced resonant
maximum, which corresponds to an eigen oscillation with Q factor exceeding 104
, has been achieved in the proposed system. The
optical length of the resonator exceeds the wavelength of the working oscillation by over 50 times. The feasibility of tuning the resonator
via moving both the mirrors and the diffraction grating is demonstrated. The proposed model holds promise for applications in the
development of solid-state and quantum radiation sources operating in the microwave and higher frequency ranges.
