Manchester Metropolitan University's Research Repository

    Dark pulse generation in fiber lasers incorporating carbon nanotubes

    Liu, HH and Chow, KK (2014) Dark pulse generation in fiber lasers incorporating carbon nanotubes. Optics Express, 22 (24). pp. 29708-29713. ISSN 1094-4087


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    © 2014 Optical Society of America.We demonstrate the generation of dark pulses from carbon nanotube (CNT) incorporated erbium-doped fiber ring lasers with net anomalous dispersion. A side-polished fiber coated with CNT layer by optically-driven deposition method is embedded into the laser in order to enhance the birefringence and nonlinearity of the laser cavity. The dual-wavelength domain-wall dark pulses are obtained from the developed CNT-incorporated fiber laser at a relatively low pump threshold of 50.6 mW. Dark pulses repeated at the fifth-order harmonic of the fundamental cavity frequency are observed by adjusting the intra-cavity polarization state.

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