Oscillator for generating a signal comprising a terahertz-order frequency using the beat of two optical waves

摘要

The invention concerns an oscillator generating a wave composed of a frequency of on the order of terahertz from a beat of two optical waves generated by a dual-frequency optical source. The oscillator includes a modulator the transfer function of which is non-linear for generating harmonics with a frequency of less than one terahertz for each of the optical waves generated by the dual-frequency optical source, an optical detector able to detect at least one harmonic for each of the optical waves generated by the dual-frequency optical source and transforming the harmonics detected into an electrical signal, a phase comparator for comparing the electrical signal with a reference electrical signal, and a module for controlling at least one element of the dual-frequency optical source with a signal obtained from the signal resulting from the comparison.

主权项

1. Oscillator generating a wave composed of a frequency of on the order of terahertz from a beat of two optical waves generated by a dual-frequency optical source, wherein the oscillator comprises:
a modulator the transfer function of which is non-linear for generating harmonics with a frequency of less than one terahertz for each of the optical waves generated by the dual-frequency optical source by modulating the optical waves generated by the dual-frequency optical source by a radio or micro wave frequency, an optical detector able to detect at least one harmonic for each of the optical waves generated by the dual-frequency optical source and to transform the harmonics detected into a beat signal, a phase comparator for comparing the beat signal with a reference beat signal, circuitry causing the oscillator to perform controlling at least one element of the dual-frequency optical source with a signal obtained from the signal resulting from the comparison.