The hyper-continuum which covers whole light regions with a spectra intensity of 100-1000 MW/nm has been generated by a self-trapped intense femtosecond laser pulse in atmospheric pressure rare gases. The optimum condition to generate the UV and VUV regions have been studied for laser power and gas pressure. Pulse duration, group delay, and spatial divergence of the hyper-continuum have been measured as a function of wavelength.

© 1996 Optical Society of America

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