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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 17 — Aug. 17, 2009
  • pp: 15350–15358

Host dependence of spectroscopic properties of Dy3+ - doped and Dy3+, Tm3+-codped Ge-Ga-S-CdI2 chalcohalide glasses

Haitao Guo, Lei Liu, Yongqian Wang, Chaoqi Hou, Weinan Li, Min Lu, Kuaisheng Zou, and Bo Peng  »View Author Affiliations


Optics Express, Vol. 17, Issue 17, pp. 15350-15358 (2009)
http://dx.doi.org/10.1364/OE.17.015350


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Abstract

Two serial Dy3+-doped and Dy3+, Tm3+-codoped (100-x)(0.8GeS2·0.2Ga2S3)·xCdI2 (0≤x≤20) chalcohalide glasses were prepared and characterized. By analyzing the absorption and emission measurements of the two serial chalcohalide glasses with the Judd-Ofelt analysis, we were able to calculate its Judd-Ofelt strength parameters Ωt (t = 2, 4, 6), transition probabilities, exited state lifetimes, branching ratios, and emission cross-sections. In the Dy3+-doped glasses, increase of CdI2 had positive effect up to 1330nm fluorescence and the emission cross section (σemi ) was estimated to be 4.19 × 10−20cm2 for the 0.2wt% Dy3+-doped 64GeS2·16Ga2S3·20CdI2 glass. In the Dy3+, Tm3+-codoped glasses, increase of CdI2 diminished the amount of ethane-like units [S3(Ga)Ge-Ge(Ga)S3], improved the Tm3+: 3F4 → Dy3+: 6H11/2 energy transfer efficiency and intensified the mid-infrared emissions. The emission cross sections (σemi ) of the 2900 and 4300nm fluorescences were estimated to be 1.68 × 10−20 and 1.20 × 10−20cm2 respectively for the 0.2wt% Dy3+ and 0.5wt% Tm3+ codoped 64GeS2·16Ga2S3·20CdI2 glass. These novel chalcohalide glasses are promising candidate materials for fiber-amplifiers and mid-infrared laser devices.

© 2009 OSA

OCIS Codes
(160.2290) Materials : Fiber materials
(160.2750) Materials : Glass and other amorphous materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Materials

History
Original Manuscript: June 18, 2009
Revised Manuscript: August 2, 2009
Manuscript Accepted: August 4, 2009
Published: August 14, 2009

Citation
Haitao Guo, Lei Liu, Yongqian Wang, Chaoqi Hou, Weinan Li, Min Lu, Kuaisheng Zou, and Bo Peng, "Host dependence of spectroscopic properties of Dy3+- doped and Dy3+, Tm3+-codped Ge-Ga-S-CdI2 chalcohalide glasses," Opt. Express 17, 15350-15358 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-17-15350


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