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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 23 — Dec. 1, 2011
  • pp: 4551–4553

Near-infrared ultrabroadband luminescence spectra properties of subvalent bismuth in CsI halide crystals

Liangbi Su, Hengyu Zhao, Hongjun Li, Lihe Zheng, Guohao Ren, Jun Xu, Witold Ryba-Romanowski, Radosław Lisiecki, and Piotr Solarz  »View Author Affiliations


Optics Letters, Vol. 36, Issue 23, pp. 4551-4553 (2011)
http://dx.doi.org/10.1364/OL.36.004551


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Abstract

We observed two ultrabroadband near-infrared (NIR) luminescence bands around 1.2 and 1.5 μm in as-grown bismuth-doped CsI halide crystals, without additional aftertreatment. Dependence of the NIR emission properties on the excitation wavelength and measurement temperature was studied. Two kinds of NIR active centers of subvalent bismuth and color centers were demonstrated to coexist in Bi:CsI crystal. The eye-safe 1.5 μm emission band with an FWHM of 140 nm and lifetime of 213 μs at room temperature makes Bi:CsI crystal promising in the applications of the ultrafast laser and ultrabroadband amplifier.

© 2011 Optical Society of America

OCIS Codes
(160.3380) Materials : Laser materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Materials

History
Original Manuscript: September 20, 2011
Revised Manuscript: October 19, 2011
Manuscript Accepted: October 19, 2011
Published: November 23, 2011

Citation
Liangbi Su, Hengyu Zhao, Hongjun Li, Lihe Zheng, Guohao Ren, Jun Xu, Witold Ryba-Romanowski, Radosław Lisiecki, and Piotr Solarz, "Near-infrared ultrabroadband luminescence spectra properties of subvalent bismuth in CsI halide crystals," Opt. Lett. 36, 4551-4553 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-23-4551

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