Towards ten-watt-level 3-5 μm Raman lasers using tellurite fiber

Gongwen Zhu, Lixiang Geng, Xiushan Zhu, Li Li, Qian Chen, R. A. Norwood, T. Manzur, N. Peyghambarian

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


Raman lasers based on mid-infrared fibers operating at 3-5 μm atmospheric transparency window are attractive sources for several applications. Compared to fluoride and chalcogenide fibers, tellurite fibers are more advantageous for high power Raman fiber laser sources at 3-5 μm because of their broader Raman gain bandwidth, much larger Raman shift and better physical and chemical properties. Here we report on our simulations for the development of 10-watt-level 3-5 μm Raman lasers using tellurite fibers as the nonlinear gain medium and readily available continuous-wave (cw) and Q-switched erbium-doped fluoride fiber lasers at 2.8 μm as the pump sources. Our results show that a watt-level or even tenwatt-level fiber laser source in the 3-5 μm atmospheric transparency window can be achieved by utilizing the 1st-and 2nd-order Raman scattering in the tellurite fiber. The presented numerical study provides valuable guidance for future 3-5 um Raman fiber laser development.

Original languageEnglish (US)
Pages (from-to)7559-7573
Number of pages15
JournalOptics Express
Issue number6
StatePublished - Mar 23 2015

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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