Terahertz system

摘要

The present invention relates to a terahertz system for generating and time-resolved incoherent detecting of THz radiation, said system comprising a pulse laser light source (1) emitting laser pulses with a pulse duration of up to 1 ps at a repetition frequency of at least 1 MHz, a first THz antenna serving as sender (3) which is optically coupled to the laser light source (1) and converts the laser pulses into THz pulses with a pulse duration of up to 10 ps, and a second THz antenna serving as receiver (5). It is the object of the present invention to provide an improved terahertz system. As compared with the state of the art, it is above all intended to allow for a faster incoherent measurement of THz radiation. To this end, the present invention proposes to couple the second THz antenna to a detector circuitry whose bandwidth is at least equivalent to the repetition frequency of the laser light source. Furthermore, the present invention relates to applications of the terahertz system as well to a method for generating and time-resolved incoherent detecting of THz radiation.

主权项

1. A terahertz system for generating and time-resolved incoherent detecting of THz radiation, said system comprising
a pulsed laser light source (1) which emits laser pulses with a pulse duration of up to 1 ps at a repetition frequency of at least 1 MHz, preferably at least 10 MHz, a first THz antenna serving as sender (3), said antenna coupled optically to the laser light source (1) and converting the laser pulses into THz pulses; and a second THz antenna serving as receiver (5),wherein the second THz antenna is coupled to a detector circuitry whose bandwidth is at least equivalent to the repetition frequency of the laser light source.