Q-switching an all-fiber laser using acousto-optic null coupler |
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Authors: | Yuval Berg Sharone Goldring Shaul Pearl Ady Arie |
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Institution: | 1. Applied Physics Division, Soreq NRC, 81800, Yavne, Israel 2. Department of Physical Electronics, Faculty of Engineering, Tel Aviv University, 69978, Tel Aviv, Israel
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Abstract: | A new method for Q-switching an all-fiber laser is presented. It is based on induced acoustic long period grating operating on a null coupler, which acts as acoustically controlled tunable output coupler. Q-switching is achieved by switching on and off the acoustic wave in a burst mode, thereby generating laser pulses that are ~400 times shorter than the acoustically controlled coupler’s rise time. Output pulse energy of 22 μJ and temporal width of ~100 ns were measured at a wavelength of 1.54 μm. |
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