| 摘要 |
The laser apparatus for generating high energy pulses of short duration comprises a pumping laser source and a miniaturized cavity defined by a pair of mirrors in which an active crystal and an absorber are housed. The active crystal presents a gain greater than 10 dB in double pass, said absorber being a saturable absorber. The process for generating a laser pulse consists of generating a beam of modes within a cavity and amplifying only one of the modes, so that the resultant signal presents a very limited duration but a very high intensity, with a spatial quality close to the diffraction limit.
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