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Proceedings Paper

New development on Cr4+-doped tunable laser crystal
Author(s): Hongbin Zhu; Shenghui Yan; Siting Wang; Heyu Zhong; Xinda Chen; Ye Zhu
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Paper Abstract

Recently Cr4+-doped tunable laser crystals has become one kind of very important laser mediums. Cr4+ ions on a tetrahedral site is responsible for the near-infrared laser emission. It shows great promise as a very useful and practical laser crystal in many areas. It is also an important way to reach the tunable laser wavelength to 1.55 u which is the minimal dispersion region in optical fibers. In this paper we report some new development on Cr4+ doped tunable laser crystal which were finished in our lab. Cr4+ doped forsterite crystal is the first one in this area. By growing this crystal in oxygen atmosphere, considerable amount of Cr4+ occurs from the oxidation of Cr3+. A special technique had been adopted to protect the oxidation of Ir crucible. The second is Cr4+-doped YAG crystal, Ca2+ or Mg2+ codoped Cr:YAG host crystal has been grown in our lab, sized in 30 X 100 mm with excellent optical quality. We failed to produce Cr4+ in many host crystal, such as YAP, Al2O3 by oxidizing atmosphere or codoped with Ca2+, Mg2+.

Paper Details

Date Published: 17 April 1995
PDF: 4 pages
Proc. SPIE 2380, UV and Visible Lasers and Laser Crystal Growth, (17 April 1995); doi: 10.1117/12.206934
Show Author Affiliations
Hongbin Zhu, Shanghai Institute of Optics and Fine Mechanics (China)
Shenghui Yan, Shanghai Institute of Optics and Fine Mechanics (China)
Siting Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Heyu Zhong, Shanghai Institute of Optics and Fine Mechanics (China)
Xinda Chen, Shanghai Institute of Optics and Fine Mechanics (China)
Ye Zhu, Shanghai Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 2380:
UV and Visible Lasers and Laser Crystal Growth
Richard Scheps; Milan R. Kokta, Editor(s)

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