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Sci Rep. 2014 May 30;4:5134. doi: 10.1038/srep05134.

Testing of a femtosecond pulse laser in outer space.

Author information

1
1] Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea [2] [3].
2
1] Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea [2].
3
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea.
4
1] Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea [2] Satellite Technology Research Center (SaTReC), Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea.
5
Satellite Technology Research Center (SaTReC), Korea Advanced Institute of Science and Technology (KAIST), Science Town, Daejeon, 305-701, South Korea.

Abstract

We report a test operation of an Er-doped fibre femtosecond laser which was conducted for the first time in outer space. The fibre-based ultrashort pulse laser payload was designed to meet space-use requirements, undergone through ground qualification tests and finally launched into a low-earth orbit early in 2013. Test results obtained during a one-year mission lifetime confirmed stable mode-locking all the way through although the radiation induced attenuation (RIA) in the Er-doped gain fibre caused an 8.6% reduction in the output power. This successful test operation would help facilitate diverse scientific and technological applications of femtosecond lasers in space and earth atmosphere in the near future.

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