Properties of diffraction gratings used as output couplers in a quasi-optical gyrotron
The design of a diffraction grating uses as an output coupler for a Fabry-Pérot resonator is presented. We then consider the problem of determining the distortion and the cross-polarization of the incident Gaussian beam. Different types of gratings and planes with straight or curvilinear grooves and elliptical, have been designed and built. The output pattern from a resonator using such a grating has been measured experimentally. We found that the elliptical grating generates the least distortion and cross-polarization. This result is attributed to the geometry of the grooves and is in excellent agreement with numerical calculations.
Bibliographic Reference: Article: Journal of Applied Physics, Vol. 73 (1993) No. 5, pp. 2089-2102
Record Number: 199710325 / Last updated on: 1997-04-14
Original language: en
Available languages: en