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Proceedings Paper

Pump couplers in a series connection
Author(s): Xiao Chen; Guangyong Jin; Qirong Xiao; Ping Yan; Mali Gong
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Paper Abstract

The coupling efficiency of the pump coupler determines the pump light injection capacity of a laser system. We have designed a pump coupler in a series connection, of which two or more pump couplers are spliced together through signal fibers to form a new pump coupler with high coupling efficiency and high output power. In the experiment, 3×1 end-pumping couplers and (2+1)×1 side-pumping couplers were made respectively and the two couplers were spliced to form a series connection. Six LDs with output power of about 200 W respectively were spliced with the six pumping arms of the new pump coupler. A total output power of this series connection pump coupler was about 1160 W, corresponding to a coupling efficiency as high as 98%. The loss of signal light was less than 0.4%.

Paper Details

Date Published: 18 November 2014
PDF: 8 pages
Proc. SPIE 9266, High-Power Lasers and Applications VII, 92661I (18 November 2014); doi: 10.1117/12.2074419
Show Author Affiliations
Xiao Chen, Changchun Univ. of Science and Technology (China)
Guangyong Jin, Changchun Univ. of Science and Technology (China)
Qirong Xiao, Tsinghua Univ. (China)
Ping Yan, Tsinghua Univ. (China)
Mali Gong, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 9266:
High-Power Lasers and Applications VII
Ruxin Li; Upendra N. Singh; Robert F. Walter, Editor(s)

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