FREQUENCY-MEASUREMENT OF ACCURATE SIDE-BAND OF AN OPTICAL FREQUENCY COMB GENERATOR

The accuracy of the optical sideband generation of an optical frequenc y comb generator (OFCG) was examined. The fundamental light and its se cond harmonics from a YAG laser were used as input to the OFCG and as pump light to an optical parametric oscillator (OPO), respectively. Th e frequency between the +15th order OFCG sideband and the OPO signal l ight was compared with that between the -15th order sideband and the i dler. The frequency shift of the generated sideband was estimated to b e smaller than 6 x 10(-13) at a frequency span of 276 GHz.