New development on Cr4+-doped tunable laser crystal

Hongbin Zhu; Shenghui Yan; Siting Wang; Heyu Zhong; Xinda Chen; Ye Zhu

doi:10.1117/12.206934

17 April 1995 New development on Cr⁴⁺-doped tunable laser crystal

Hongbin Zhu, Shenghui Yan, Siting Wang, Heyu Zhong, Xinda Chen, Ye Zhu

Proceedings Volume 2380, UV and Visible Lasers and Laser Crystal Growth; (1995) https://doi.org/10.1117/12.206934
Event: Photonics West '95, 1995, San Jose, CA, United States

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⁺.

Citation Download Citation

Hongbin Zhu, Shenghui Yan, Siting Wang, Heyu Zhong, Xinda Chen, and Ye Zhu "New development on Cr⁴⁺-doped tunable laser crystal", Proc. SPIE 2380, UV and Visible Lasers and Laser Crystal Growth, (17 April 1995); https://doi.org/10.1117/12.206934

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