Femtosecond laser written channel waveguides in tellurite glass

被引：99
|
作者：
Nandi, P. [1 ]
Jose, G.
Jayakrishnan, C.
Debbarma, S.
Chalapathi, K.
Alti, K.
Dharmadhikari, A. K.
Dharmadhikari, J. A.
Mathur, D.
机构：
[1] Indian Inst Technol, Dept Phys, Gauhati 781039, India
[2] SAMEER, Bombay 400076, Maharashtra, India
[3] Tata Inst Fundamental Res, Bombay 400005, Maharashtra, India
来源：
OPTICS EXPRESS | 2006年 / 14卷 / 25期
关键词：
D O I：
10.1364/OE.14.012145
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have made and characterized a new, erbium-doped tellurite glass that has high glass transition temperature. Addition of phosphate is found to increase the phonon energy. The peak emission cross section is 6 x 10(-21) cm(2) at 1537 nm and the fluorescence lifetime of the I-4(13/2)- I-4(15/2) transition is 4.1 ms. We have written 2-D channel waveguides in this glass using focused, 45-fs pulses from an amplified Ti:sapphire laser at different laser energies and writing speeds. Migration of atoms towards the periphery of the waveguides occurs, leading to refractive index changes. Channels show waveguiding at 1310 nm which is promising for the fabrication of integrated lasers and broadband amplifiers. (c) 2006 Optical Society of America
引用
收藏
页码：12145 / 12150
页数：6
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