Abstract
A frequency multiplying device is analyzed that provides power at selected cyclotron harmonics in a quasioptical gyrotron. The device utilizes a prebunching cavity and an uptapered magnetic field that impose a double-resonance condition on the radiation generated. This selects among cyclotron harmonics in the output cavity even though the cavity structure may support all harmonics. The prebunching is accomplished by modulation of electron orbital magnetic moments by a low-frequency-input rf field. Two design examples are given for quasioptical gyrotron frequency multiplier operation at the third cyclotron harmonic (four or seven times the input frequency) with a 10--15 % electronic efficiency and greater than 33% overall rf conversion efficiency. The drawback of this method of prebunching is that high-input electric-field intensities are required for efficient operation. However, it is shown that the double-resonance method allows complete harmonic selection in the linear regime for zero detuning between the cyclotron and field frequency. When this detuning is nonzero, the selected harmonic still has a higher linear efficiency than all others.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Physical review. A, Atomic, molecular, and optical physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
