Output coupling of a quasi-optical Fabry-Perot resonator by means of a diffractive grating in the mm wave range
In present quasi-optical gyrotrons the microwave power is coupled out by edge diffraction. Results of cold tests and hot tests show that the output is non-Gaussian. Output couplers have been tested successfully by using a grating reflector which replaces one of the resonator mirrors. This type of coupling produces almost perfect Gaussian output patterns, enabling the use of an additional perfectly reflecting mirror to focus the output microwave beam efficiently into a corrugated HE(11) waveguide.
Bibliographic Reference: Paper presented: 15th International Conference on Infrared and Millimeter Waves, Orlando, Florida (US), Dec. 10-14, 1990
Availability: Available from (1) as Paper EN 35640 ORA
Record Number: 199110218 / Last updated on: 1994-12-02
Original language: en
Available languages: en