In light of possible spectroscopic applications, we examine the continuous
frequency tuning characteristics of a nonresonant continuous-wave Raman las
er in Hz. We demonstrate a continuous tuning range for the Raman-shifted St
okes output of roughly 2.5 GHz, which is limited by spatial mode hops. Near
ly constant output power across this range is predicted and observed by pum
ping the Raman laser cavity near four times threshold. (C) 2000 Optical Soc
iety of America [S0740-3224(00)01307-2].