High-Power, High-Brightness Fiber Laser
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- Shirakawa Akira
- Institute for Laser Science, University of Electro-Communications
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- Ueda Ken-ichi
- Institute for Laser Science, University of Electro-Communications
Bibliographic Information
- Other Title
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- 高輝度高出力ファイバーレーザー
- コウキド コウシュツリョク ファイバーレーザー
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Abstract
The recent progress of high-power fiber lasers is remarkable. Advantages of a fiber laser in characteristics such as ultra-low loss, high-damage threshold, and waveguide structure enable the outstanding high-power operation with excellent beam quality. In this paper, with the overview of the progressive advances of fiber lasers, our work on high-power fiber lasers is reported. The power limitation of double-clad fiber laser is discussed, which clarifies the importance of scaling the launching capability of pump power. A concept of a fiber-disk laser with a side-pumping geometry was developed and more than 1 kW output power was demonstrated, which is the highest power from a single fiber laser. For further power and brightness scaling, coherent beam combining of many fiber lasers is also investigated. N fiber lasers simply coupled by fused fiber couplers generate power-summed output from one of N fiber ports with high addition efficiencies of more than 85% for N≤8 due to selective excitation of constructive interference modes.
Journal
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- IEEJ Transactions on Electronics, Information and Systems
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IEEJ Transactions on Electronics, Information and Systems 124 (7), 1367-1374, 2004
The Institute of Electrical Engineers of Japan
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Details 詳細情報について
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- CRID
- 1390282679580926208
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- NII Article ID
- 10013268071
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- NII Book ID
- AN10065950
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- BIBCODE
- 2004ITEIS.124.1367S
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- ISSN
- 13488155
- 03854221
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- NDL BIB ID
- 7019905
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed