All-solid-state self-Raman tunable laser unit

Abstract

The invention relates to the field of tunable laser technology and discloses an all-solid-state self-Raman tunable laser unit. The all-solid-state self-Raman tunable laser unit comprises a semiconductor laser unit, a collimating lens, a focusing lens, a dichroic mirror, a Yb-doped tungstate crystal, a broadband concave reflecting mirror, a beam splitter, a dispersing prism, a planar reflecting mirror and a coupling output mirror; the dichroic mirror, the broadband concave reflecting mirror, the beam splitter, the dispersing prism and the planar reflecting mirror constitute a tunable laser resonant cavity, and the dichroic mirror, the broadband concave reflecting mirror, the beam splitter and the coupling output mirror constitute a Raman resonant cavity. A composite cavity composed of the tunable laser resonant cavity and the Raman resonant cavity is adopted, the Yb-doped tungstate crystal with a stimulated Raman scattering effect is placed in the composite cavity, and therefore frequency conversion is achieved through the nonlinear effect of the Yb-doped tungstate crystal in a tunable laser oscillator, tunable Raman lasers in the waveband of 1130 nm-1160 nm are directly obtained, and the all-solid-state self-Raman tunable laser unit has the advantages of being unique in output wavelength, compact in structure, and high in practicality.

Description

technical field [0001] The invention relates to the technical field of tunable lasers, in particular to an all-solid-state self-Raman tunable laser. Background technique [0002] Tunable laser has the outstanding characteristics of rich and controllable output wavelengths, and has been widely used in many fields such as physics, chemistry and other basic scientific research, life medicine, information communication, laser measurement, etc., providing a powerful tool for the exploration and development of the above-mentioned cutting-edge fields Tool of. [0003] At present, dye lasers and titanium sapphire lasers are tunable lasers with relatively mature technology and wide application fields. Solid-state laser materials doped with rare earth elements are another important class of laser materials. Among them, laser materials and lasers doped with Yb rare earth ions, compared with titanium sapphire lasers, have the advantages of simple energy level structure, lower quantum ...

AI Technical Summary

Problems solved by technology

[0004] However, dye lasers, titanium sapphire lasers, and Yb-doped material lasers are limited by the energy level structure of the laser gain material, and can only output a specific wavelength. For example, the output wavelength of the dye laser is in the visible light band, and the output wavelength of the titanium sapphire laser is around 800nm. , the output wavelength of Yb-doped material laser is around 1030nm

With the deepening of research, tunable lasers with a single wavelength can no longer meet the increasing application requirements, so the generation of more tunable lasers with more wavelengths has become an urgent problem to be solved

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