Generation device of random polarization distributing vector light beam

A generation device, a technology of linearly polarized light, applied in optics, optical components, nonlinear optics, etc., can solve the problem of not being able to generate a variety of arbitrary polarization distribution vector beams at the same time, to reduce the impact of beam quality, and to achieve broad application prospects. Effect
CN100592137CInactive Publication Date: 2010-02-24NANJING UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2010-02-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a generation device of an arbitrary polarization distribution vector light beam, and is in turns provided with a spatial light modulator controlled by a computer, a first lens,a wave filter, two quarter wave plates, a second lens and a Rochi grating along the light direction of the light source producing linearly polarized light. The spatial light modulator is positioned ona front focal plane of the first lens, a back focal plane is provided with the wave filter, and the wave filter is synchronously positioned on a front focal plane of the second lens. Rochi grating ispositioned on a back focal plane of the second lens. Two quarter wave plates are placed by closely depending on the backlight source surface of the wave filter. The invention has the advantage of producing arbitrary vector light beam, and to be important, the device of the invention can produce the vector light beam in real time and dynamic manner. Moreover, the device greatly reduces the effectto the light beam quality caused by coherent noise, and can produce the high-quality vector light beam, and the producing manner is real time and dynamic.
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Description

technical field

[0001] The invention relates to a generating device for a vector beam, in particular to a dynamic and real-time generating device for a vector beam with arbitrary polarization distribution. Background technique

[0002] Light waves contain information such as frequency, phase, intensity, and polarization. The light beams we use for scientific research are usually unpolarized light or polarized light in the form of linear polarization, circular polarization, and elliptical polarization. The polarization characteristics of these beams are relatively simple, and their polarization distribution is uniform in the plane perpendicular to the beam propagation direction, which is called a uniformly polarized beam. In general, the scalar beam model can be used to analyze and describe its propagation process. When dealing with problems related to these beams, we generally use scalar theory, so such beams can be collectively referred to as scalar beams. In order to make...

Claims

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