| 摘要 |
The present invention relates to a UV-visible laser system having ultrashort high-power and/or high-energy pulses. According to the invention, the laser system includes at least one non-linear optical crystal (1) suitable for receiving two separate ultrashort laser pulses (31, 32) in the visible or infrared domain, respectively emitted by two separate sources of laser pulses (11, 12), and time-synchronisation means (41, 42) adapted such that said two ultrashort laser pulses (31, 32) overlap in time and space in said non-linear optical crystal (1) with a given phase shift, and generate, by sum frequency, an ultrashort laser pulse (131) having an optical frequency equal to the sum of the respective optical frequencies of the two separate laser pulses (31, 32). |
