Hybrid Q-switched Yb-doped fiber laser

J. Y. Huang, W. Z. Zhuang, W. C. Huang, Kuan-Wei Su, Kai-Feng Huang, Yung-Fu Chen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


We investigate the performance of a hybrid Q-switched (HQS) fiber laser that is constructed with a low RF-power driven acousto-optic (AO) Q-switch and an AlGaInAs semiconductor saturable absorber. Compared to a pure passively Q-switched (PQS) fiber laser, the ratio of timing jitter to pulse period can be significantly reduced from 2% to 0.3% in the regime of far above threshold. On the other hand, the prelasing effect in a pure actively Q-switched fiber laser can be considerably improved. More importantly, the maximum pulse energy of the HQS fiber laser can be increased approximately 25% in comparison with the result of the PQS fiber laser. At a pump power of 24 W, the highest pulse energy is up to 0.56 mJ with the pulse duration of 50 ns at the repetition rate of 23 kHz.

Original languageEnglish
Pages (from-to)9364-9370
Number of pages7
JournalOptics Express
Issue number10
StatePublished - 9 May 2011


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