Conversion of gyrotron output into a gaussian beam using the far-field

Authors
Ogawa, I Idehara, T Maekawa, S Kasparek, W Brand, GF
Citation
I. Ogawa et al., Conversion of gyrotron output into a gaussian beam using the far-field, INT J INFRA, 20(5), 1999, pp. 801-821
Citations number
16
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES
ISSN journal
01959271 → ACNP
Volume
20
Issue
5
Year of publication
1999
Pages
801 - 821
Database
ISI
SICI code
0195-9271(199905)20:5<801:COGOIA>2.0.ZU;2-1
Abstract
A compact system to convert gyrotron output into an intense gaussian beam h as been designed by introducing an intermediate focusing element into the q uasi-optical system. The design is significantly simplified by applying gau ssian optics and confirmed by application of the Huygens equation. The beam quality is improved by truncating the sidelobes of the far-field. In spite of the beam truncation, only a small fraction (11%) of the beam power is s acrificed.