Self-Q-switching behavior of erbium-doped tellurite microstructured fiber lasers

Zhi Xu Jia, Chuan Fei Yao, Zhe Kang, Guan Shi Qin, Yasutake Ohishi, Wei Ping Qin

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We reported self-Q-switching behavior of erbium-doped tellurite microstructured fiber (EDTMF) lasers and further demonstrated a self-Q-switched EDTMF laser with a high repetition rate of more than 1MHz. A 14cm EDTMF was used as the gain medium. Upon a pump power of ∼705mW at 1480nm, output pulses with a lasing wavelength of ∼1558nm, a repetition rate of ∼1.14MHz, and a pulse width of ∼282ns were generated from the fiber by employing a linear cavity. The maximum output power was ∼316 mW and the slope efficiency was about 72.6% before the saturation of the laser power. Moreover, the influence of the fiber length on laser performances was investigated. The results showed that self-Q-switching behavior in our experiments was caused by the re-absorption originated from the ineffectively pumped part of the active fiber.

Original languageEnglish
Article number223103
JournalJournal of Applied Physics
Volume115
Issue number22
DOIs
StatePublished - 14 Jun 2014
Externally publishedYes

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