| 摘要 |
A wide-spectrum compact ultrabrief laser source includes a rare-earth ion primary laser. The source is pumped by a pump light flux centered on a wavelength lambda<SUB>D</SUB>, the flux being emitted by a solid laser pump source. The primary source emits a primary light flux centered on a wavelength lambda<SUB>L </SUB>of spectral width Deltalambda<SUB>L</SUB>. The latter is injected via an optical injection into a photonic crystal fiber having a length L, a cross-section d, and a set of cavities of diameter phi. A coupling optics collects the light flux at the output of the photonic crystal fiber. The light flux is centered on a wavelength lambda<SUB>F </SUB>and has a spectral width Deltalambda<SUB>F</SUB>. The spectrum is subjected in the photonic crystal fiber to an enlargement which is due for more than 50% to phase self-modulation.
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