Abstract

An adjustable iris has been developed to operate in the 10⁻¹⁰-Torr vacuum environment of a storage ring. It was baked out at 300°C and has been used more than 100 times. Measurements have been carried out using the spontaneous emission of an undulator set on the storage ring. They show that the iris could be centered and adjusted accurately from outside the vacuum chamber and used as a mode selector for free electron lasers.

© 1984 Optical Society of America

Diagnostic techniques and UV-induced degradation of the mirrors used in the Orsay storage ring free-electron laser

P. Elleaume, M. Velghe, M. Billardon, and Jean M. Ortega
Appl. Opt. 24(17) 2762-2770 (1985)

Polarization enhancing optical system for a high-resolution VUV spectroscopic facility at a synchrotron light source

Charles M. Brown and Marshall L. Ginter
Appl. Opt. 23(22) 4034-4039 (1984)

Spectral radiant power measurements of VUV and soft x-ray sources using the electron storage ring BESSY as a radiometric standard source

J. Fischer, M. Kühne, and B. Wende
Appl. Opt. 23(23) 4252-4260 (1984)

Emission of photons by undulators

Yves Farge
Appl. Opt. 19(23) 4021-4026 (1980)

Quasi-cw 20-W tunable 1-sec pulse CO₂ laser for optical pumping

L. E. Sharp and H. J. Barkley
Appl. Opt. 23(9) 1395-1398 (1984)