400-nm-Bandwidth Emission From a Cr-Doped Glass Fiber

Author

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

Author_Institution

Inst. of Electro-Opt. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung

Volume

19

Issue

8

fYear

2007

fDate

4/15/2007 12:00:00 AM

Firstpage

595

Lastpage

597

Abstract

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 12muW of amplified spontaneous emission was obtained by pumping with a 900-nm Ti : sapphire laser

Keywords

chromium; fluorescence; glass fibres; impurity absorption spectra; laser materials processing; optical fibre fabrication; optical pumping; superradiance; 1144 nm; 293 to 298 K; 900 nm; Al₂O₃:Ti; Cr-doped glass fiber; Ti:sapphire laser pumping; amplified spontaneous emission; fluorescent intensity; laser-heated pedestal growth; Absorption; Chromium; Doping; Fiber lasers; Fluorescence; Glass; Laser excitation; Laser transitions; Pump lasers; Temperature; Fluorescence spectroscopy; infrared spectroscopy; light sources; optical fiber devices; transition metal compounds;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2007.894322

Filename

4137559