摘要:
A device for producing a polychromatic light including an optical pump that delivers a first radiation at a first wavelength; a light guide; and a selective injector that injects the radiation into the guide, the guide being arranged to generate a harmonic corresponding to the selected injector and provide a polychromatic light at an outlet, by non-linear excitation of the first radiation and the harmonic.
摘要:
A device for producing a polychromatic light including an optical pump that delivers a first radiation at a first wavelength; a light guide; and a selective injector that injects the radiation into the guide, the guide being arranged to generate a harmonic corresponding to the selected injector and provide a polychromatic light at an outlet, by non-linear excitation of the first radiation and the harmonic.
摘要:
A dedicated polychromatic light generating device including optical pumping devices used to deliver radiation with at least two different excitation wavelengths and a light-guiding device used to deliver polychromatic light at an output when excited by the radiation in a non-linear interaction regime.
摘要:
A dedicated polychromatic light generating device including optical pumping devices used to deliver radiation with at least two different excitation wavelengths and a light-guiding device used to deliver polychromatic light at an output when excited by the radiation in a non-linear interaction regime.
摘要:
The invention relates to a micro-structured optical fibre (1) including at least one core (7, 7A, 7B, 7C, 7D1 7E, 7F) with a core space symmetry, characterised in that said core contains at least one doping material distributed in said core according to a dissymmetrical implantation relative to said at least one symmetry axis.
摘要:
A supercontinuum source capable of emitting waves between the infrared range and the ultraviolet range, includes a pulsed laser source (12) capable of generating a laser beam and a non-linear microstructured optical fibre (14) capable of receiving the laser beam, in such a way that the supercontinuum source is capable of generating a beam (F′) over a pulse duration (T′), characterized in that the supercontinuum source includes elements for varying the pulse duration.
摘要:
According to one aspect, the invention relates to a laser emission device for the spectroscopic analysis of a sample, comprising: a primary laser source (401) emitting a pump beam (I5) and an excitation beam (I2), said two beams being pulsed and having a nanosecond or subnanosecond pulse time; a non-linear optical fibre (406) into which the excitation beam is injected in order to form a probe beam (I4) having a wide spectral band; a device (405) for controlling the time profile of either the pump beam or the excitation beam, allowing compensation of the time spreading of the probe beam generated by the non-linear optical fibre, in order to obtain pump and probe beams having similar pulse times; and means (409) for spatially overlaying of the pump and probe beams for the spectroscopic analysis of the sample.
摘要:
A supercontinuum source capable of emitting waves between the infrared range and the ultraviolet range, includes a pulsed laser source (12) capable of generating a laser beam and a non-linear microstructured optical fiber (14) capable of receiving the laser beam, in such a way that the supercontinuum source is capable of generating a beam (F′) over a pulse duration (T′), characterized in that the supercontinuum source includes elements for varying the pulse duration.