604nm orange light full-solid laser device for blue light pumping praseodymium-doped yttrium lithium fluoride

Abstract

The invention provides a 604nm orange light full-solid laser device for blue light pumping praseodymium-doped yttrium lithium fluoride, and relates to a full-solid laser device. The 604nm orange light full-solid laser device is provided with a 444nm blue light semiconductor laser device, a shaping prism, a focusing prism, a plane input mirror, a Pr:YLF laser crystal, a glass thin sheet, a laser output mirror and a blue light optical filter, wherein the 444nm blue light semiconductor laser device is used as a pumping source of the 604nm orange light full-solid laser device; the shaping prism is located at the output end of the 444nm blue light semiconductor laser device; the focusing lens is arranged at the output end of the shaping prism; the plane input mirror is located at the output end of the focusing prism; the input end surface of the Pr:YLF laser crystal is close to the plane input mirror; the glass thin sheet is arranged at the output end of the Pr:YLF laser crystal; the laser output mirror is arranged at the output end of the glass thin sheet; the blue light optical filter is arranged at the output end of the laser output mirror and is used for filtering 444nm pumping light which is not completely absorbed, so that 604nm single-wavelength orange lasers can be output.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to a 604nm orange all-solid-state laser pumped by a 444nm blue light semiconductor laser pumping praseodymium-doped yttrium lithium fluoride (Pr:YLF). Background technique [0002] Visible solid-state lasers based on praseodymium (Pr) materials have become a hot spot in the field of laser research in recent years. Pr:YLF laser crystal has laser emission lines of multiple wavelengths such as 604nm and 607nm in the orange light band. Although the stimulated emission cross section of 604nm is larger than that of 607nm, due to the reabsorption loss of 604nm (see literature B Xu et al., "Highly efficient InGaN-LD-pumped bulk Pr:YLF orange laser at 607nm", Optics Communication Vol.305, pp.96(2013)), which led to the weak position of 604nm in the resonant cavity in the competition of 607nm , so it is difficult to obtain 604nm at room temperature. For frequency selection of laser lines with two...

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Problems solved by technology

[0003] At present, there are few reports on the acquisition of Pr:YLF crystal 604nm laser in the world, and the method of obtaining orange light is mainly through frequency doubling and frequency combining technology, or by increasing the pump light power, frequency doubling and frequency combining technology The experimental design is relatively complicated, and the 604nm laser obtained by high-power pumping has great instability.

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