Spontaneous Raman scattering as a high-resolution XUV radiation source
Abstract
A type of high resolution XUV radiation source is described which is based upon spontaneous anti-Stokes scattering of tunable incident laser radiation from atoms excited to metastable levels. The theory of the source is summarized and two sets of experiments using He (1s2s)(1)S atoms, produced in a CW hollow cathode and in a pulsed high power microwave discharge, are discussed. The radiation source is used to examine transitions originating from the 3p(6) shell of potassium. The observed features include four previously unreported absorption lines and several sharp interferences of closely spaced autoionizing lines. A source linewidth of about 1.9 cm(-1) at 185,000 cm(-1) is demonstrated. Previously announced in STAR as N83-18422
- Publication:
-
IEEE Journal of Quantum Electronics
- Pub Date:
- December 1983
- DOI:
- 10.1109/JQE.1983.1071791
- Bibcode:
- 1983IJQE...19.1795R
- Keywords:
-
- Extreme Ultraviolet Radiation;
- Radiation Sources;
- Raman Spectra;
- Spectral Resolution;
- Ultraviolet Spectroscopy;
- Absorption Spectra;
- Atomic Excitations;
- Hollow Cathodes;
- Metastable Atoms;
- Potassium;
- Scattering Cross Sections;
- Tunable Lasers;
- Lasers and Masers