摘要:
The invention relates to a method for generating a spectrum extending from the infrared range to the ultraviolet range, consisting of injecting, into a microstructured optical fiber, a pumped laser beam having a wavelength in the infrared range, characterized in that the method includes the following steps: generating, in the fiber, a first four-wave mixing or a primary mixing centered on the wavelength of said laser beam; generating, in the fiber, a second four-wave mixing centered on one (32) of the rays (32, 34) from the first four-wave mixing or secondary pump ray; and widening the spectrum about one (36) of the rays from the second four-wave mixing.