Two-Photon Spectroscopy of Core Excitons in Barium Fluoride Using Synchrotron Radiation and Laser Light

Toru Tsujibayashi, Minoru Itoh, Junpei Azuma, Masayuki Watanabe, Osamu Arimoto, Shunsuke Nakanishi, Hiroshi Itoh, and Masao Kamada

Phys. Rev. Lett. 94, 076401 – Published 23 February 2005

Abstract

We have conducted two-photon spectroscopy of core excitons in ${B a F}_{2}$ . Synchrotron radiation and laser light were used for $5 p$ core-electron excitation and Auger-free luminescence was detected as the signal. Two-photon excitation enables access to $f$ and $p$ orbitals that cannot be reached by one-photon excitation of electrons in $p$ orbitals. It has been found that the spin-orbit splittings of $4 f$ and $6 p$ states of the Ba ion in ${B a F}_{2}$ are $0.7 \pm 0.1$ and $1.4 \pm 0.1 e V$ , respectively.

Received 4 September 2004

DOI:https://doi.org/10.1103/PhysRevLett.94.076401

Authors & Affiliations

Toru Tsujibayashi^1,*, Minoru Itoh², Junpei Azuma³, Masayuki Watanabe⁴, Osamu Arimoto⁵, Shunsuke Nakanishi⁶, Hiroshi Itoh⁶, and Masao Kamada³

¹Department of Physics, Osaka Dental University, 8-1 Kuzuha-hanazono, Hirakata 573-1121, Japan
²Department of Electrical and Electronic Engineering, Shinshu University, Nagano 380-8553, Japan
³Synchrotron Light Application Center, Saga University, Saga 840-8502, Japan
⁴Department of Interdisciplinary Environment, Kyoto University, Kyoto 606-8501, Japan
⁵Department of Physics, Okayama University, Okayama 700-8530, Japan
⁶Department of Advanced Materials Science, Kagawa University, Takamatsu 761-0396, Japan

^*Electronic address: toru-t@cc.osaka-dent.ac.jp

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Issue

Vol. 94, Iss. 7 — 25 February 2005

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