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Proceedings Paper

Narrowing the linewidth to a desired value with a reflecting volume-Bragg-grating (RVBG) for high-powered LDs
Author(s): Liangping Xue; You Wang; He Cai; Guofei An; Wei Zhang; Jie Zhou; Hongyuan Wang; Juhong Han; Zhigang Jiang; Ming Gao
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Paper Abstract

In recent years, reflecting volume-Bragg-gratings (RVBGs) have been considered as the perfect elements to narrow the spectrum with highly adjustable parameters. In fact, the effects of narrowing the linewidth of high-powered LDs are determined by the parameters such as the grating thickness, refractive index modulation, and grating spatial frequency. By use of the theoretical regime, the relationships between the effective diffraction efficiency and these parameters of a RVBG have been systematically investigated to narrow the linewidth to a desired value. Although the results reveal that a higher effective diffraction efficiency may be achieved by adopting three parameters mentioned above with higher values, by considering the difficulties and confinement in production process of a RVBG, the characteristic parameters should be carefully selected as some appropriate values. From the evaluation, one also understands that the narrow linewidth of a RVBG-coupled LD and the high effective diffraction efficiency cannot be arbitrarily realized at the same time for a real case. The conclusions are thought to be valuable in construction of a practical narrow linewidth LD system.

Paper Details

Date Published: 4 May 2015
PDF: 8 pages
Proc. SPIE 9543, Third International Symposium on Laser Interaction with Matter, 95431K (4 May 2015); doi: 10.1117/12.2183408
Show Author Affiliations
Liangping Xue, Southwest Institute of Technical Physics (China)
You Wang, Southwest Institute of Technical Physics (China)
He Cai, Southwest Institute of Technical Physics (China)
Guofei An, Southwest Institute of Technical Physics (China)
Wei Zhang, Southwest Institute of Technical Physics (China)
Jie Zhou, Southwest Institute of Technical Physics (China)
Hongyuan Wang, Southwest Institute of Technical Physics (China)
Juhong Han, Southwest Institute of Technical Physics (China)
Zhigang Jiang, Southwest Institute of Technical Physics (China)
Ming Gao, Southwest Institute of Technical Physics (China)


Published in SPIE Proceedings Vol. 9543:
Third International Symposium on Laser Interaction with Matter
Yury M. Andreev; Zunqi Lin; Xiaowu Ni; Xisheng Ye, Editor(s)

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