Free electron and cyclotron resonance distributed feedback lasers and masers
US4661783A · kind A · utility
43Cited by
14References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 18, 1981 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Mar 18, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J25/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Free-electron lasers and masers are modified by eliminating the resonator cavity as such. The feedback mechanism, essential to oscillation, is distributed through and integrated with the transmission line which guides the electromagnetic wave at the active region where interaction with the electron beam takes place. The feedback structure is created by perturbations in the transmission line along the length thereof at the locations of the zero electric field lines of a desired oscillatory standing wave mode. The perturbations may take the form of axial, helical, and azimuthal deformation of the transmission line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.