Application of ultrafast time-to-two-dimensional-space-to-time conversion (I): Time-varying spectral modulation for arbitrary ultrafast signal generation

Time-varying spectral modulation for arbitrary ultrafast signal generation is demonstrated as one of applications of ultrafast time-to-two-dimensional-space-to-time conversion. The continuous sequence of a spectral-decomposed pulse is generated from a seed ultrashort pulse and its spectrum on each timing is independently modulated in the space domain. As a result of preliminary experiments, the ultrashort pulse sequence composed of four pulses of a 1-ps interval with three wavelength channels can be generated after time-varying spectral modulation.