Title :
Laser microwave double-resonance experiment on trapped 113 Cd+ ions
Author :
Tanaka, Utako ; Imajo, Hidetsuka ; Hayasaka, Kazuhiro ; Ohmukai, Ryuzo ; Watanabe, Masayoshi ; Urabe, Shinji
Author_Institution :
Commun. Res. Lab., Kansai Adv. Res. Center, Kobe, Japan
fDate :
4/1/1997 12:00:00 AM
Abstract :
The possibility of using Cd+ ions as a microwave frequency standard whose light source is an all-solid state UV laser system is presented. The ground-state hyperfine splitting of trapped 113Cd+ ions is measured using an RF trap technique. The transition is detected using a laser microwave double-resonance method in the presence of He buffer gas. The splitting is determined to be 15 199 862 858(2) Hz. The preciseness of the value was improved over that in previous data by seven orders of magnitude. A light source of 214.5 nm is being developed by the authors for optical pumping and laser-cooling of Cd+ ions whose fundamental oscillator is based on diode lasers
Keywords :
cadmium; cooling; ground states; hyperfine structure; ions; measurement standards; microwave-optical double resonance; optical pumping; positive ions; trapped ions; 214.5 nm; 113Cd+; Cd; He buffer gas; RF trap technique; all-solid state UV laser system; diode lasers; fundamental oscillator; ground-state hyperfine splitting; laser microwave double-resonance method; laser-cooling; light source; microwave frequency standard; optical pumping; trapped ions; Gas lasers; Helium; Laser transitions; Light sources; Masers; Microwave frequencies; Microwave theory and techniques; Optical buffering; Optical pumping; Radio frequency;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
