400-nm-bandwidth emission from a Cr-doped glass fiber

Jian Cheng Chen*, Yen Sheng Lin, Cheng Nan Tsai, Kuang Yao Huang, Chien Chih Lai, Wei Zhi Su, Ren Chin Shr, Fu Jen Kao, Tao Yuan Chang, Sheng Lung Huang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


Cr4+-doped glass fiber by a laser-heated pedestal growth method is reported. By analyzing the absorption spectra, the transitions of Cr3+ and Cr4+ in the fibers are identified. With appropriate pumping wavelength and divalent doping concentration, both Cr3+ and Cr4+ emission bands can be excited simultaneously, and become comparable in their fluorescent intensities. As a result, more than 400-nm-width emission peaked at 1144 nm was generated at room temperature. As much as 12 μW of amplified spontaneous emission was obtained by pumping with a 900-nm Ti:sapphire laser.

Original languageEnglish
Pages (from-to)595-597
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
StatePublished - 15 Apr 2007


  • Fluorescence spectroscopy
  • Infrared spectroscopy
  • Light sources
  • Optical fiber devices
  • Transition metal compounds


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