132 results about "Maser" patented technology

The invention discloses a device which uses a dual-beam optical fiber light trap to measure acceleration. The device comprises an optical maser, a light intensity modulator, two single mode fibers, a capillary glass tube, a photonics image detector and a processor which are arranged on a substrate; wherein, light sent out from the optical maser is modulated into two beams of light with same intensity and then respectively input in the two single mode fibers; and the output ends of the two single mode fibers are respectively fixed at the two ends of the capillary glass tube; and the caliber of the capillary glass tube is matched with the output end of the single mode fiber; a ball-shaped SiC particle is arranged in the capillary glass tube. The device provided by the invention is fixed on the main body of a measured object, and when the main body of the measured object is in accelerated motion along the direction of optical axis, the particle is going to deviate from the original balance position. The photonics image detector measures the position of the particle, and a corresponding adjustment value can be worked out by the processor, and then the light intensity modulator changes the output light intensities of the two beams of light according to the measured position of the particle and the obtained adjustment value to let the particle return to the original balance position. According to the light intensity differences of the light intensity modular, the processor works out gained acceleration.

The invention belongs to the field of microwave masers, in particular to a speed-modulated relativistic backward wave tube which operates in a locally inhomogeneous magnetic field. At that same time,the electron beam collection position and the extraction cavity can be ensure to have a certain distance, and the beam wave conversion efficiency can be improved. The structure of the backward wave tube mainly comprises a backward wave tube body, an annular cathode, a first pre-modulation cavity, a second pre-modulation cavity, a resonant reflector, a first section slow wave structure, a modulation cavity, a second section slow wave structure, an extraction cavity, a coaxial collector, an electron beam and a magnetic field coil. A magnetic field coil comprise a first coil and a second coil, and a soft magnetic material ring is arrange between that first coil and the second coil; The first coil, the second coil and the loop of soft magnetic material act together to produce a locally inhomogeneous magnetic field.