Fiber laser with in-cavity polarization switching

Xiaojun Li; Theodore F. Morse; Fei Luo; Stephen B. Ippolito

doi:10.1117/12.604590

1 June 2005 Fiber laser with in-cavity polarization switching

Xiaojun Li, Theodore F. Morse, Fei Luo, Stephen B. Ippolito

Proceedings Volume 5792, Laser Source and System Technology for Defense and Security; (2005) https://doi.org/10.1117/12.604590
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

In this work, we demonstrate how a polarization switching technique can be used to create multiple fiber ends, and allow the radiation to pass twice through each amplifying section for more efficient energy extraction. The technique uses a polarizing beam splitter combined with polarization switching in each arm of the cavity to define a ring-like cavity with multiple gain sections that can be end pumped. Polarization-maintaining double-clad rare-earth-doped fiber with slightly multi-mode core was used as the gain sections. A laser system based on the in-cavity polarization switching design has been demonstrated with maximum measured 62% slope efficiency and close to 30W output. The relatively low output power is only limited by the available pump sources.

Citation Download Citation

Xiaojun Li, Theodore F. Morse, Fei Luo, and Stephen B. Ippolito "Fiber laser with in-cavity polarization switching", Proc. SPIE 5792, Laser Source and System Technology for Defense and Security, (1 June 2005); https://doi.org/10.1117/12.604590

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