Following the experiments of Shverdin and colleagues [Phys. Rev. Lett.94, 033904 (2005)], we describe a technique for determining the temporal envelope of an optical beam whose spectrum consists of n discrete, equally spaced frequency components. Four-wave mixing is employed to generate n-1 higher-frequency sidebands. The relative intensities of these sidebands, together with the intensities of the incident sidebands, determine the unknown relative phases of the incident beam.
© 2005 Optical Society of America
S. N. Goda, M. Y. Shverdin, D. R. Walker, and S. E. Harris, "Measurement of Fourier-synthesized optical waveforms," Opt. Lett. 30, 1222-1224 (2005)