Study of the Perimeter Deposition Enhanced Cr4+ Concentration in Cr4+:YAG Single-Clad Crystal Fiber

  • Cheng-Nan Tsai
  • Wei-Chung Ho
  • Sheng-Lung Huang
  • Shih-Kun Liu
  • Yi-Hua Chang
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 293)


Cr4+:YAG crystal has been shown an exceptionally successful ultra broad-band amplified spontaneous emission light source that fully cover 1253–1530 nm range (3 dB bandwidth up to 265 nm). Keeping in mind that the amplified spontaneous emission of Cr4+:YAG is proportional to the concentration of Cr4+ ions. The Cr4+ ions are replenished using an electron-gun to deposit CaO on the source rod circumference under annealing treatment at 1350 °C. The laser-heated pedestal growth method was employed to re-grow the Cr4+:YAG single-clad crystal fiber. The doped concentration of CaO can be in-diffuse and it can serve as charge compensators to enhance the concentration of Cr4+ ions. The experimental results indicate that the Cr4+ concentration of Cr4+:YAG crystal fiber can be raised by a factor of 196 %.


Doping Deposition Laser heated pedestal growth Cr4+:YAG Crystal fiber 



This work is supported by the National Science Council, Taiwan under grant NSC 101-2221-E-230-012.


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Cheng-Nan Tsai
    • 1
  • Wei-Chung Ho
    • 2
  • Sheng-Lung Huang
    • 3
  • Shih-Kun Liu
    • 4
  • Yi-Hua Chang
    • 1
  1. 1.Institute of Electronic EngineeringCheng Shiu UniversityKaohsiungTaiwan, Republic of China
  2. 2.Institute of Electronic EngineeringNational Kaohsiung University of Apply ScienceKaohsiungTaiwan, Republic of China
  3. 3.Institute of Photonics and OptoelectronicsNational Taiwan UniversityTaipeiTaiwan, Republic of China
  4. 4.Institute of Photonics and CommunicationNational Kaohsiung University of Apply ScienceKaohsiungTaiwan

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