Q-switched fiber laser by all-fiber piezoelectric modulation and pulsed pump |
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Authors: | Bo Peng Mali Gong Ping Yan Qiang Liu |
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Affiliation: | Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instruments and Mechanology, Tsinghua University, Room 2307, Beijing 100084, PR China |
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Abstract: | We have demonstrated a Q-switched fiber laser based on a mechanical all-fiber Q-switching module and pulsed-pump configuration. A piezoelectric actuator was utilized in the module to change the round-trip loss of the fiber laser cavity, and exploited the pulsed pump to prevent the multiple pulsing phenomena. Q-switching pulses were successfully achieved at the repetition rates from 1 Hz to 2 kHz, and the average output power was 11 mW. The peak power in excess of 114 W with associated pulse width of 193 ns was obtained at the repetition rate of 500 Hz. Besides preventing multiple pulsing phenomena, pulsed-pump configuration can also suppress amplified spontaneous emission and increase pulse stability and peak power simultaneously. |
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Keywords: | Fiber lasers Active Q-switch Pump modulation |
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