Development of frequency stabilized laser system for long-lived isotope analysis, 3; Computer-based laser frequency tuning system

Miyabe, Masabumi   ; Oba, Masaki ; Kato, Masaaki; Wakaida, Ikuo  ; Watanabe, Kazuo

Multi-step resonance ionization spectrometry for long-lived nuclei in nuclear waste materials requires laser sources having high frequency stability and tunability. In this study we have developed a novel frequency control system consisting of digital circuitry and computer to improve the frequency tunability of the developed laser stabilization system using dichroic atomic vapor laser lock (DAVLL) and fringe offset lock (FOL) techniques. Based on the heterodyne experiment and multi-step laser induced fluorescence spectroscopy of atomic Ca, the frequency stability and tunability of the developed system were evaluated.