Method and optical apparatus for producing a non-linear optical signal in the excitation material by the excitation field, as well as the use of use of the method and said optical unit

摘要

This invention, the non-linear light information (17) method and the optical device in order to form (10) being was excited the material which (16) in by excited field (2), to be coherent with the said excited field (2) and to overlap timewise and position 1st optical pulse of the frequency which differs and field of 2nd optical pulse the said material (16) in 1st optical generator unit (1) to form the 1st pulse of 1st frequency, with the 1st beam (3), 2nd pulse of 2nd frequencyThe 2nd beam of the 2nd optical generator unit which the synchronous pumping is done (8) with it forms, with the aforementioned 1st optical generator unit (1), using the 1st pulse of the aforementioned 1st frequency as a fundamental, pulse of harmonic frequency of the said 1st frequency it forms (5) and the aforementioned 2nd optical generator unit (7) method and the optical device which the pumping are done (10) it regards (SHG), with the pulse of the said harmonic frequency. With this invention, the description above 2nd optical generator unit (7) as an optical parametric generator unit, the description above 2nd the beam (8) in, pulse of idler frequency is formed in order 2nd the description above 1st is lower than frequency to form 2nd the pulse of frequency in the idler beam, pulse of the signal frequency whose the description above 2nd is higher than frequency is formed the signal beam (9) in.