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Optical supercontinuum generation from nanosecond pump pulses in an irregularly microstructured air-silica optical fiber |
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| Authors: | G.E. Town T. Funaba T. Ryan K. Lyytikainen |
| Affiliation: | Department of Electronics, Macquarie University, 2109, NSW, Australia Yamagata College of Industry and Technology, 2-2-1 Matsuei, 990-2473, Yamagata, Japan Optical Fiber Technology Centre, Australian Photonics Cooperative Research Centre, Australian Technology Park, 1430, Eveleigh, NSW, Australia |
| Abstract: | An optical supercontinuum was generated by pumping a short length of randomly microstructured air-silica optical fiber with a Q-switched Nd:YAG laser. The use of relatively long pump pulses and a longer pump wavelength are believed to be responsible for an improvement in results relative to similar previous reports. A figure of merit for optical continuum generation is defined, and is shown to be considerably larger in this and other experiments in which stimulated Raman scattering, instead of self-phase modulation, is the primary nonlinear process seeding spectral broadening. |
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