Abstract
We present the first experimental demonstration of a resolvable mode structure with spacing c/2nL in the RF spectra of ultralong Raman fiber lasers. The longest ever demonstrated laser cavity (L=84km), RF peaks of ∼100 Hz width and spacing ∼1 kHz have been observed at low intracavity powers. The width of the peaks increases linearly with growing intracavity power and is almost independent of fiber length. © 2007 Optical Society of America.
Original language | English |
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Pages (from-to) | 1135-1137 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 32 |
Issue number | 9 |
DOIs | |
Publication status | Published - May 2007 |