We have demonstrated wideband frequency modulation of the frequency comb lines of a high-repetition-rate fiber laser. With a modulation frequency of only ∼10 kHz, we have generated modulation indices in excess of 250. Although internally modulated, the laser remains stable with 2-kHz linewidths, and thus the 10-kHz modulation sidebands are still clearly resolved even after propagation over several hundred kilometers. This unique characteristic is used for simultaneous measurement of propagation distances to 1-m resolution and velocities of less than 3 mm/s over a distance of greater than 50 km.
© 2004 Optical Society of AmericaFull Article | PDF Article
Tara M. Fortier, David J. Jones, Jun Ye, Steven T. Cundiff, and Robert S. Windeler
Opt. Lett. 27(16) 1436-1438 (2002)
Jens Rauschenberger, Tara M. Fortier, David J. Jones, Jun Ye, and Steven T. Cundiff
Opt. Express 10(24) 1404-1410 (2002)
F. K. Fatemi, J. W. Lou, and T. F. Carruthers
Opt. Lett. 29(9) 944-946 (2004)