Dynamic laser control using feedback from a gain grating |
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| Authors: | Green RPM Crofts GJ Hubbard W Udaiyan D Dong Hwan Kim Damzen MJ |
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| Affiliation: | Blackett Lab., Imperial Coll., London; |
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| Abstract: | We demonstrate that self-induced gain gratings can provide nonlinear optical feedback that results in single frequency selection and passive self Q-switching of a conventional linear laser cavity. An experimental Nd:YAG laser system is described that yields a temporally-smooth 20 ns pulse at 1.064 μm. In addition, we show that the feedback has phase-conjugate properties that permit “flower-like” mode formation even though the azimuthal symmetry of the cavity is broken |
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