696nm red light total-solid laser of blu-ray pump praseodymium-doped yttrium lithium fluoride

Abstract

A 696nm red light total-solid laser of Blu-ray pump praseodymium-doped yttrium lithium fluoride relates to a total-solid laser. The 696nm red light total-solid laser of Blu-ray pump praseodymium-doped yttrium lithium fluoride is provided with a 444nm Blu-ray semiconductor laser, a plastic prism, a focusing lens, a plane input mirror, Pr: yttrium lithium fluoride (YLF) laser crystal, barium boron oxide (BBO) birefringent crystal, a laser output mirror and a Blu-ray optical filter; wherein the 444nm Blu-ray semiconductor laser serves as a pump source of the 696nm red light total-solid laser, the plastic prism is arranged at an output end of the 444nm Blu-ray semiconductor laser, the focusing lens is arranged at an output end of the plastic prism, the plane input mirror is arranged at an output end of the focusing lens and serves an input mirror of 696nm red light, an input end face of the Pr: YLF laser crystal is next to the plane input mirror; the BBO birefringent crystal is arranged at an output end of the Pr: YLF laser crystal, the laser ouput mirror is arranged at an output end of the BBO crystal and serves as an output mirror of the 696nm red light laser, and the Blu-ray optical filter is arranged at an output end of the laser output mirror and used for filtering Blu-ray.

Description

technical field [0001] The invention relates to an all-solid-state laser, in particular to a 696nm red-light 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 640nm, 696nm, 698nm and 721nm in the red light band, and the laser gain of 640nm and 721nm is stronger (see the literature Teoman Gün et al., "Power scaling of laser diode pumped Pr 3+ :LiYF 4 cw lasers: efficient laser operation at522.6nm, 545.9nm, 607.2nm, and639.5nm", Optics Letters Vol.36, pp.1002(2011)). For two adjacent wavelengths and different polarization directions of laser lines Frequency selection, usually by inserting a polarization beam splitter PBS into the cavity (see literature B...

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Problems solved by technology

[0003] At present, there are only reports of Pr:YLF crystal 697.7nm laser (refer to the literature J.M.Sutherland et al., "Visible continuous-wave laser transitions in Pr 3+ :YLF and femtosecond pulse generation", Optics Letters Vol.21, pp.797(1996)), there has been no report of obtaining a 696nm red solid-state laser from Pr:YLF crystal

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