A study of a Q-switched double-clad ytterbium-doped fiber laser with amplifying effect

A high repetition rate ytterbium-doped double-clad (YDDC) fiber laser with amplifying effect is described by using acousto-optic modulator. The characteristic of Q-switched pulses are studied with accurate control of opening gate time of modulator. The stable Q-switched pulses with tens of nanosecon...

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Bibliographic Details
Published in:Optics communications 2008-05, Vol.281 (9), p.2552-2556
Main Authors: Zhao, Hongming, Lou, Qihong, Zhou, Jun, Zhang, Fangpei, Dong, Jingxing, Wei, Yunrong, Wang, Zhijiang
Format: Article
Language:English
Subjects:
Acousto-optic
Beam characteristics: profile, intensity, and power
spatial pattern formation
Double-clad
Exact sciences and technology
Fiber laser
Fiber lasers
Fundamental areas of phenomenology (including applications)
High repetition rate
Laser optical systems: design and operation
Lasers
Optics
Physics
Q-switched
Q-switching
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Description
Summary:A high repetition rate ytterbium-doped double-clad (YDDC) fiber laser with amplifying effect is described by using acousto-optic modulator. The characteristic of Q-switched pulses are studied with accurate control of opening gate time of modulator. The stable Q-switched pulses with tens of nanoseconds width can be observed at high repetition rate varied from 50kHz to 500kHz using this laser. The stable operation area of the Q-switched fiber laser is discussed and the analysis results agree well with that of the experiment.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2007.12.044