Multi-wavelength non-atomic resonance Faraday semiconductor laser

Abstract

The invention provides a multi-wavelength non-atomic resonance Faraday semiconductor laser. The laser comprises a laser source, a collimating lens, a Faraday atom optical filter and a reflector (6) which are sequentially arranged on an optical path; the laser source comprises a first laser light source (1) and a second laser light source (1a); an atom air chamber (4) contains a first alkali metalatom and a second alkali metal atom; a permanent magnet (5) applies a static magnetic field to the atom air chamber (4), and therefore, the magnetic field intensity in the atomic gas chamber (4) is uniformly distributed in the axial direction and non-uniformly distributed in the radial direction, and the magnetic field intensity on each emergent light path corresponds to the magnetic field intensity which is required by a corresponding wavelength transmission spectrum of a Faraday atomic filter only contains one non-atomic resonance transmission peak. According to the laser of the invention, through the optical filter with the non-uniform magnetic field, multiple beams of light respectively pass through corresponding magnetic field areas on respective optical paths, so that different magnetic field intensities can be obtained, and multi-wavelength laser output without interference light is realized.

Description

【Technical field】 [0001] The invention belongs to the technical field of semiconductor lasers, in particular to a multi-wavelength non-atomic resonance Faraday semiconductor laser with a gas chamber mixed with two kinds of alkali metal atoms. 【Background technique】 [0002] In the field of lasers, the concept of multiwavelength lasers has been around since the early days of lasers, but its status is still rather vague. Realizing multiple wavelength laser outputs on the same device can improve the application efficiency of devices, reduce system complexity, and reduce costs. As more and more applications find new laser devices, multi-wavelength laser devices are also getting more attention. [0003] Multi-wavelength lasers can be applied in fields such as optical communication, wavelength division multiplexing, and quantum frequency standards. Traditional multi-wavelength lasers are mainly based on fiber lasers and solid-state lasers. Fiber lasers typically consist of rela...

AI Technical Summary

Problems solved by technology

It follows that, due to figure 2 The beams of the two wavelengths are always under the same magnetic field conditions, no matter whether the atomic gas chamber is filled with buffer gas, in this structure, different magnetic fields cannot be set for the beams of different wavelengths, so figure 2 The structure shown cannot achieve 852nm and 780nm output without disturbing light

That is to say, in the above two methods, the dual-wavelength laser is completed under the condition of uniform magnetic field, and each wavelength is subjected to the same magnetic field condition for frequency selection, and the output achieved shows limitations.

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