A tunable 1.1‐&mgr;m fiber Raman oscillator is reported. The oscillator is pumped by a cw mode‐locked Nd : YAG laser at 1.064 &mgr;m. Wavelength tuning is obtained by using group velocity dispersion in a 600‐m‐long single‐mode borosilicate fiber and subnanosecond pulses tunable from 1.101 to 1.125 &mgr;m are generated. The slope of the experimental tuning curve gives a group dispersion of 31 ps/nm km at 1.12 &mgr;m for the Raman fiber, in good agreement with the calculated value of combined material and waveguide dispersion.
展开▼
