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Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator

A technology of piezoelectric ceramics and coplanar electrodes, applied in instruments, optics, nonlinear optics, etc., can solve the problems of unable to modulate the polarization state and single polarization state of light, and achieve the effect of rapid and continuous modulation

Inactive Publication Date: 2007-12-05
ZHEJIANG UNIV
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The traditional polarizing optical element mainly delays the phase of light through a quarter-wave plate to obtain left-handed or right-handed circularly polarized light, which can only produce a single polarization state of light, but cannot perform continuous polarization of light. modulation

Method used

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  • Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator
  • Coplanar electrode type piezoelectric ceramic material optical circular polarizing modulator

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Embodiment Construction

[0012] The present invention will be further described below in conjunction with drawings and embodiments.

[0013] As shown in FIG. 1 , the incident light 1 sequentially passes through the first piezoelectric ceramic component 3 with adjustable birefringence controlled by the first modulation controller 7 and the first piezoelectric ceramic component 3 with adjustable birefringence controlled by the second modulation controller 8 . Two piezoelectric ceramic components 4 are connected and assembled through an optical path to output left-handed or right-handed circularly polarized light 6 .

[0014] On the optical path before the incident light 1 enters the first piezoelectric ceramic component 3 with adjustable birefringence characteristics controlled by the first modulation controller 7 , an input coupling device 2 with a collimating function is arranged.

[0015] An output coupling device 5 with a collimating or focusing function is arranged on the optical path of the left-h...

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Abstract

The invention discloses a coplanar electrode type piezoelectric optical ceramic circular polarization modulator. The incident light passes through two adjustable-double refractivity piezoelectric ceramic components, controlled by two modulation controllers, respectively, and connected through light path, to be converted into levorotatory or dextrogyrate circular polarizing light; or a collimating input coupling device is arranged in front of the first piezoelectric ceramic component and simultaneously, a collimating or focusing output coupling device is arranged behind the second one. The invention can provide electric field, magnetic field or pressure for the piezoelectric ceramics, which can change its own double refractivity by the action of the electric field, magnetic field or pressure, and thus, modulate the levorotatory and dextrogyrate circular polarizing lights, even the linear polarizing light, extremely convenient to detect chiral substances and improve the light injection efficiency of the spinning electronic devices.

Description

technical field [0001] The invention relates to an optical element, in particular to a coplanar electrode type piezoelectric ceramic material optical circular polarization modulator. Background technique [0002] Optical circular polarization modulators play an important role in the detection and identification of chiral substances and in spintronic devices. In chiral substances, if left-handed and right-handed circularly polarized light is propagated at the same time, different optical rotations will be produced. In addition, since left-handed and right-handed circularly polarized light have different propagation constants in chiral substances, circular dichroism will appear, which becomes an important basis for detecting and identifying chiral substances. In spintronic devices, due to the electric field vector rotated by circularly polarized light, the injection efficiency of photonic devices in the form of light injection can be greatly improved, thereby improving the pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/03G02F1/055
Inventor 李宇波杨建义江晓清王明华
Owner ZHEJIANG UNIV
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