A novel side coupling technique for rugged all-fiber lasers and amplifiers

Yoav Sintov*, Yaakov Glick, Tomer Koplowitch, Ori Katz, Yehuda Nafcha, Yariv Shamir, Raphael Lavi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

29 Scopus citations

Abstract

A novel side coupling technique between two multimode high NA fibers is described. The technique is used to efficiently pump fiber lasers and amplifiers by low brightness fiber coupled pump diodes. With the presented technique, identical multimode fibers with 0.46NA and core diameters extending from 125μm to 400μm, can be coupled together, and provide pump coupling efficiency of >90%. Direct coupling to a rare-earth doped fiber is possible. In this configuration one fiber is used as the pump guiding fiber and the second fiber is the rare-earth doped double clad fiber. By utilizing the presented pump coupling technique, highly efficient, rugged and low cost short pulse and CW all-fiber lasers were implemented, with average output power extending to 300W and peak power of 600kW.

Original languageAmerican English
Title of host publicationLaser Source Technology for Defense and Security III
DOIs
StatePublished - 2007
Externally publishedYes
EventLaser Source Technology for Defense and Security III - Orlando, FL, United States
Duration: 9 Apr 200710 Apr 2007

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume6552
ISSN (Print)0277-786X

Conference

ConferenceLaser Source Technology for Defense and Security III
Country/TerritoryUnited States
CityOrlando, FL
Period9/04/0710/04/07

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