High-resolution spectroscopy based on optical phase modulator and optical frequency comb

摘要

A phase modulation of an optical frequency comb has been applied to measure a fine spectrum in the 1.5 (mu)m wavelength range by the optical heterodyne-detection method. The measurement frequency range covered 25 GHz, which satisfies the frequency interval of the optical frequency comb, with a spectral resolution of 1 MHz.