We have created a broad spectrum spanning more than an optical octave by launching femtosecond pulses from a battery operated Cr:LiSAF laser into a photonic crystal fiber. Despite the massive broadening in the fiber, the comb structure of the spectrum is preserved, and this frequency comb is perfectly suited for applications in optical frequency metrology.
© 2001 Optical Society of America
R. Holzwarth, M. Zimmermann, Th. Udem, T. W. Hánsch, P. Russbüldt, K. Gäbel, R. Poprawe, J. C. Knight, W.J. Wadsworth, and P. St. J. Russell, "White-light frequency comb generation with a diode-pumped Cr:LiSAF laser," Opt. Lett. 26, 1376-1378 (2001)