Sub-Doppler spectroscopy of molecular iodine around 541 nm with a novel solid state laser source

Year: 2000

Authors: Cancio Pastor P., Zeppini P., Arie A., De Natale P., Giusfredi G., Rosenman G., Inguscio M.

Autors Affiliation: Istituto Nazionale di Ottica INO , Largo E. Fermi, 6 I-50125 Firenze, Italy; European Laboratory for Nonlinear Spectroscopy, INFM, and Department of Physics-University of Firenze,Largo E. Fermi, 2 I-50125 Firenze, Italy; Department of Electrical Engineering-Physical Electronics, Faculty of Engineering, Tel Aviv University, 69978 TelAviv, Israel

Abstract: We report high resolution sub-Doppler spectroscopy of molecular iodine hyperfine transitions around 541 nm. A novel solid state source, based on a diode laser, a Yb+ fiber amplifier and a periodically-poled KTiOPO4 crystal, was developed, having a continuous tunability range of 1.2 THz. The performance of this crystal for doubling 1083 nm laser radiation is demonstrated for the first time, as well as the use of a broad band Yb-doped fiber amplifier for Doppler-free spectroscopy. Preliminary results for the frequency stability of the 1083 nm diode laser locked to an iodine hyperfine line are reported. This source can be used as a compact frequency standard for precision measurements of the atomic helium and determination of the fine structure constant alpha. (C) 2000 Elsevier Science B.V. All rights reserved.


Volume: 176 (4-6)      Pages from: 453  to: 458

KeyWords: Iodine; Laser mode locking; Molecular physics; Optical materials; Potassium compounds; Semiconductor lasers; Spectroscopic analysis, High resolution sub-Doppler spectroscopy; Molecular iodine hyperfine transitions, Fiber lasers
DOI: 10.1016/S0030-4018(00)00550-2

Citations: 13
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