| Original Articles |
|
|
|
|
Formation of Infrared Femtosecond Laser Induced Colour Centers
in Tb3+-Doped and Tb3+/Ce3+-Codoped Heavy Germanate Glasses |
| CHEN Guo-Rong1,3;YANG Yun-Xia1;QIU Jian-Rong2;JIANG Xiong-Wei2;K. Hirao3 |
| 1Department of Inorganic Materials, East China University of Science and Technology, Shanghai 200237
2Photon Craft Project, Japan Science and Technology Corporation, Keihanna Plaza, Kyoto 619-0237, Japan
3Division of Material Chemistry, Faculty of Engineering, Kyoto University, Sakyo, Kyoto, 606-8501, Japan |
|
| Cite this article: |
|
CHEN Guo-Rong, YANG Yun-Xia, QIU Jian-Rong et al 2003 Chin. Phys. Lett. 20 1997-2000 |
|
|
|
Abstract Formation of infrared femtosecond laser induced colour centers was observed in the Tb3+-doped and Tb3+/Ce3+-codoped heavy germanate glasses. A rectangle scanning was made by focusing the laser beam inside the glass samples. A three-dimensional yellowish block was created from the path and it corresponded to the appearance of broad absorption bands in the absorption spectra. Irradiation induced absorption coefficient μ (λ) was used to characterize the distribution of radiation induced colour centers in the samples, whose peak was located at 380 nm and extended to the longer wavelength. Ce3+ ions were found not only to inhibit the formation of colour centers, but also to enhance the recovery.
|
| Keywords:
61.80.Ba
73.61.Jc
74.25.Gz
76.30.Kg
73.43.Fj
|
|
|
Published: 01 November 2003
|
|
| PACS: |
61.80.Ba
|
(Ultraviolet, visible, and infrared radiation effects (including laser radiation))
|
| |
73.61.Jc
|
(Amorphous semiconductors; glasses)
|
| |
74.25.Gz
|
(Optical properties)
|
| |
76.30.Kg
|
(Rare-earth ions and impurities)
|
| |
73.43.Fj
|
(Novel experimental methods; measurements)
|
|
|
|
|
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
