Device for generating arbitrary vector beams based on Mach-Zehnder interferometer

An interferometer and beam technology, applied in the field of devices that generate arbitrary vector beams based on Mach-Zehnder interferometers, can solve problems such as inability to continuously and quickly switch, complex optical path adjustment, etc., and achieve the effect of rapid regulation and simple optical path

Inactive Publication Date: 2013-09-11
NORTHWEST UNIV
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Problems solved by technology

Although this method can realize the generation of a variety of vector lights and meet certain usage requirements, the adjustment o

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  • Device for generating arbitrary vector beams based on Mach-Zehnder interferometer
  • Device for generating arbitrary vector beams based on Mach-Zehnder interferometer
  • Device for generating arbitrary vector beams based on Mach-Zehnder interferometer

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Embodiment Construction

[0018] like figure 1 As shown, this embodiment provides a device for generating an arbitrary vector beam based on a Mach-Zehnder interferometer, including a fundamental mode linearly polarized laser source 1, a half-wave plate 2, a first polarization beam splitter prism 3, a first full Reflective mirror 6, first discontinuous wave plate 7, second discontinuous wave plate 8, electro-optic phase modulator 9, second total reflection mirror 10 and second polarization beam splitter prism 11.

[0019] The fundamental-mode Gaussian beam generated by the fundamental-mode linearly polarized laser light source 1 passes through the half-wave plate 2, and then is divided into vertically linearly polarized light and horizontally linearly polarized light at the first polarization beam splitter 3; wherein, the vertically linearly polarized light passes through 45° After placing the first total reflection mirror 6, it is converted into TEM through the first discontinuous wave plate 7 01 Vert...

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Abstract

The invention relates to a device for generating arbitrary vector beams based on a Mach-Zehnder interferometer. The device comprises a fundamental-mode linear polarization laser source, a half-wave plate, two polarization splitting prisms, two totally reflecting mirrors, two discontinuous wave plates and an electro-optic phase modulator, and the fundamental-mode linear polarization laser source generates a fundamental-mode Gaussian beam which is divided into two paths of orthogonal linearly-polarized light via the half-wave plate and the first polarization splitting prism. The vertically polarized light is converted into TEM01 vertically polarized light via the first 45-degree totally reflecting mirror and the first discontinuous wave plate; the horizontally polarized light is converted into TEM10 horizontally polarized light via the second discontinuous wave plate, and the TEM10 horizontally polarized light is reflected by the electro-optic phase modulator and the second 45-degree totally reflecting mirror and then is coaxially and coherently superposed with the TEM01 vertically polarized light at the position of the second polarization splitting prism to generate to vector polarized light. By the device, arbitrary phi0 and delta combined vector beams can be generated, and continuous and quick switching between different vector beams can be realized.

Description

technical field [0001] The invention belongs to the technical field of interference synthesis of vector beams, in particular to a device for generating arbitrary vector beams based on a Mach-Zehnder interferometer. Background technique [0002] The vector beam is different from the usual polarized light (linear polarization, circular polarization and elliptical polarization), and its polarization state distribution changes with the position in the cross section. As two special cases of vector beams, the polarization states of the radially and angularly polarized light spaces are distributed along the radial direction and the angular direction, respectively, and the light intensity distributions are all in the shape of a hollow ring. Due to its unique polarization distribution characteristics, radially polarized light produces a strong longitudinal electric field component at the focus and a small focal spot when focused by an aplanatic high numerical aperture lens; while ang...

Claims

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Application Information

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IPC IPC(8): G02B27/28G02B26/06G02F1/03
Inventor 陈小明白晋涛
Owner NORTHWEST UNIV
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