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Phonon coupling of Cr^3^+ ions in Cs_2NaAlF_6 crystals.

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Martínez Matos, Óscar and Torchia, Gustavo Adrián and Tocho, Jorge Omar and Khaidukov, Nikolai Mikhailivich (2004) Phonon coupling of Cr^3^+ ions in Cs_2NaAlF_6 crystals. Solid State Communications, 130 (03-04). pp. 159-163. ISSN 0038-1098

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Official URL: http://dx.doi.org/10.1016/j.ssc.2004.02.006


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Abstract

We have studied the influence of the electron-lattice coupling on the luminescence quantum yield for Cr^3^+ ions in a Cs_2NaAlF_6 crystal. For this purpose, we analyze the absorption and emission spectra of Cr^3^+ ions by means of the configurational coordinate model in the harmonic approximation. We have found the energy of the breathing phonon associated to Cr^3^+ ions in this host. In our findings we explain the high value of luminescence quantum yield reported previously (near to 70%), if we take into account the uncoupling between the breathing phonon and the normal modes associated to the bulk vibration. The Cr^3^+:Cs_2NaAlF_6 crystals promise to be a potential efficiency tunable laser device in the near infrared (700–900 nm) spectral range.


Item Type:Article
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© 2004 Elsevier Ltd.

Uncontrolled Keywords:Single-Crystals, Laser
Subjects:Sciences > Physics > Optics
ID Code:25259
Deposited On:09 May 2014 11:36
Last Modified:09 May 2014 11:36

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