White laser generating device

Abstract

An embodiment of the invention provides a white laser generating device comprising an infrared laser source, a first optical fiber, a frequency doubling crystal, a second optical fiber and a spectrum widening module which are arranged sequentially. The infrared laser source is used for generating infrared laser, the frequency doubling crystal is used for utilizing frequency doubling effect to convert the infrared laser into visible laser, and the spectrum widening module is used for widening the visible laser to obtain white laser. The infrared laser source passes through the frequency doubling crystal for laser frequency doubling, efficient ultrashort pulse frequency doubling is realized, the visible laser of certain wavelength is output and then enters a nonlinear medium through coupling by the second optical fiber, and high-power broadband visible laser outputting is realized. At the moment, spectra can cover wavebands of 450-760 nm, and high-power white laser can be generated.

Description

technical field [0001] The invention relates to the field of fiber lasers, in particular to a white light laser generating device. Background technique [0002] Broadband visible light (white light) lasers are widely used in biomedicine, laser sensing, and other fields. However, generally visible light is generated by pumping photonic crystal fibers with ultra-short pulses in the 1064nm band to achieve ultra-broadband output, but the proportion of visible light power is low; or using short-wavelength pump lasers to directly pump nonlinear materials to achieve broadband visible light output, but generally The pump laser uses a solid-state laser, the optical path is a spatial structure, and the stability is poor, and the power of the solid-state laser is difficult to increase due to the limited gain medium. Contents of the invention [0003] In view of this, the purpose of the embodiments of the present invention is to provide a white light laser generating device. [0004...

AI Technical Summary

Problems solved by technology

However, generally visible light is generated by pumping photonic crystal fibers with ultra-short pulses in the 1064nm band to achieve ultra-broadband output, but the proportion of visible light power is low; or using short-wavelength pump lasers to directly pump nonlinear materials to achieve broadband visible light output, but generally The pump laser uses a solid-state laser, the optical path is a spatial structure, and the stability is poor, and the power of the solid-state laser is difficult to increase due to the limited gain medium

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