Computational study of 3-5 mu m source created by using supercontinuum generation in As2S3 chalcogenide fibers with a pump at 2 mu m

We present simulation results for supercontinuum generation using As2S3 chalcogenide photonic crystal fibers. We found that more than 25% of input power can be shifted into the region between 3 mu m and 5 mu m using a pump wavelength of 2 mu m with a peak power of 1 kW and an FWHM of 500 fs. The broad dispersion profile and high nonlinearity in As2S3 chalcogenide glass are essential for this application. (C) 2010 Optical Society of America