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Method and device for generation of higher-order transverse modes on the basis of atom-cavity coupling

A high-order transverse mode and atomic technology, applied to the structure/shape of phonon exciters, optical resonators, laser components, etc., to achieve the effect of simple operation and stable output mode

Active Publication Date: 2016-03-02
SHANXI UNIV
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Problems solved by technology

[0005] In order to solve the problem that only the propagation direction of light can be adjusted or the cavity mirror can be tilted to generate high-order transverse modes in external cavity mode selection, the present invention provides a method and device for generating high-order transverse modes using atom-cavity coupling

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  • Method and device for generation of higher-order transverse modes on the basis of atom-cavity coupling
  • Method and device for generation of higher-order transverse modes on the basis of atom-cavity coupling

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[0023]A method for atom-cavity coupling to generate high-order transverse modes. In a system coupled by an atomic chamber filled with a cesium atom medium and a standing wave cavity, when a pair of strong coherent coupling fields with the same frequency, polarization and intensity pair When shooting through the cesium atom medium in the atomic vapor chamber, a standing wave coupling field is formed; then a weak probe field is coupled into the standing wave cavity with a fundamental mode Gaussian beam and resonantly output. The resonantly output field is called the cavity mode field , the output mode is fundamental mode Gaussian light; when the frequency of the coupling field satisfies a certain detuning relative to the atomic resonance center, the cesium atom medium in the atomic vapor chamber in the standing wave coupling field produces periodic modulation on the refractive index of the weak cavity mode field , so that different high-order transverse modes can be induced to os...

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Abstract

The present invention provides a method and device for generation of higher-order transverse modes on the basis of atom-cavity coupling. The problem is solved that higher-order transverse modes are generated through traditional modes such as inclination of a resonant cavity mirror or a light propagation direction. In a system of coupling of an atom steam chamber and a standing wave cavity, when a pair of strong coherent coupling fields performs bi-directional radiation and passes through the atomic medium in the cavity, the refractive index of a weak cavity mode field is modulated through the medium in the cavity so as to induce the generation of the higher-order transverse modes. A higher-order transverse mode laser generation system is composed of a semiconductor laser, an optical isolator, a half wave plate, a polarization splitting prism, a total reflective mirror and a convex lens, a concave lens and a cesium atom air chamber. The method and device for generation of higher-order transverse modes on the basis of an atom-cavity coupling may be applicable to the research fields such as the preparation of seed light source on the basis of a space higher-order transverse mode correlated light field near an alkali-metal atom absorption line, accurate measurement of a small displacement through adoption of higher-order transverse modes, laser cooling and optical trapping, quantum information storage, and the like.

Description

technical field [0001] The invention relates to the technical field of interaction between light and matter in quantum optics, specifically based on the modulation of the refractive index of the cavity mode by the medium in the cavity under the action of a strong coupling field, thereby realizing a high-order transverse mode generated by atom-cavity coupling Methods and devices. Background technique [0002] In the field of laser technology, the stable field distribution on a cross-section perpendicular to the propagation direction of light is defined as the transverse mode of light, that is, the distribution of light intensity on the cross-section. Compared with the laser operating in a single transverse mode, the laser Higher-order transverse modes such as Hermitian-Gaussian modes, Laguerre-Gaussian modes, and Ensgaussian modes have more complex spatial structures and contain more amplitude and phase information of the light field. Therefore, in quantum information storage...

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Application Information

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IPC IPC(8): H01S3/08
CPCH01S3/0804
Inventor 周海涛陈雪蓉武晋泽张俊香郜江瑞
Owner SHANXI UNIV
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