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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 15 — Aug. 1, 2006
  • pp: 2299–2301

Co-transition absorption property of K 2 Zn Cl 4 : Co 2 + crystal

Chaoyang Tu, Fugui Yang, Jianfu Li, Guohua Jia, Zhenyu You, Hongyan Wang, Yanping Wei, Yan Wang, and Zhaojie Zhu  »View Author Affiliations


Optics Letters, Vol. 31, Issue 15, pp. 2299-2301 (2006)
http://dx.doi.org/10.1364/OL.31.002299


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Abstract

Single-crystal K 2 Zn Cl 4 doped with Co 2 + has been grown successfully by use of the Czochralski technique. The absorption spectrum of the crystal was measured. The most intense line, centered at 650 nm , was associated with the transition A 2 4 T 1 P 4 , and a novel and important result that corporate transition (co-transition) between A 2 4 T 1 F 4 and A 2 4 T 2 4 of Co 2 + in the region of 1300 2400 nm was found and discussed. The mechanism that caused the phenomenon was explained by energy-level splitting theory. In the tetrahedral approximation, using the quantum and Tanaba–Sugano theories, Racah parameter B and crystal field parameter 10Dq were calculated. The optical energy gap, deduced to be 4.82 eV , was lower than that of pure K 2 Zn Cl 4 .

© 2006 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(160.3380) Materials : Laser materials

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: April 10, 2006
Manuscript Accepted: May 11, 2006
Published: July 10, 2006

Citation
Chaoyang Tu, Fugui Yang, Jianfu Li, Guohua Jia, Zhenyu You, Hongyan Wang, Yanping Wei, Yan Wang, and Zhaojie Zhu, "Co-transition absorption property of K2ZnCl4:Co2+ crystal," Opt. Lett. 31, 2299-2301 (2006)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-31-15-2299


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