Abstract

A novel acousto-optic switch operation by a simple laser-diode pumped acousto-optic, Q-switched, ytterbium-doped, double-clad fiber laser is reported. Stable compressed Q-switched sub-40ns pulses with a beam quality factor (M2=2) are achieved at the repetition rate of 150kHz. Q-switched pulses of 20μJ pulse energy and 35ns pulse width are obtained at the repetition rate of 50kHz. Finally, a reasonable explanation of the novel Q-switched operation is presented.

© 2007 Optical Society of America

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References

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2004

A. Piper, A. Malinowski, K. Furusawa, and D. J. Richardson, Electron. Lett. 40, 928 (2004).
[CrossRef]

2000

1998

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Figures (5)

Fig. 1
Fig. 1

Setup of the Q-switched YDDC laser.

Fig. 2
Fig. 2

Pulse width as a function of absorbed pump power and repetition rate.

Fig. 3
Fig. 3

Pulse energy as a function of absorbed pump power and repetition rate.

Fig. 4
Fig. 4

Pulse profile ( 36 ns , 50 kHz ) with 5 W absorbed pump power.

Fig. 5
Fig. 5

Pulse chain at the repetition of 50 kHz .

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