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A narrowband optical frequency filter device

A filtering device and narrow-band filtering technology, applied in optics, optical components, instruments, etc., can solve problems such as difficulty in research and development, and achieve the effects of simple structure, easy processing and good stability

Inactive Publication Date: 2018-10-16
SHANXI UNIV
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  • Application Information

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Problems solved by technology

[0003] At present, the commercial optical frequency filter devices mainly include etalons and interference filters of various wavelength bands, but the minimum bandwidth of these optical frequency filter devices is several hundred GHz, for example, the narrow-band interference filter in the 1064nm band has a bandwidth of 0.5nm , the corresponding optical frequency bandwidth is 132GHz, and with the current technical level, it is very difficult to develop narrower etalons and interference filters

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing.

[0020] Such as figure 1 The shown narrow-band optical frequency filtering device includes a two-mirror optical resonant cavity and a narrow-band filter 7, and the two-mirror optical resonant cavity includes a first cylindrical cavity 1, a second cylindrical cavity 2 and a cylindrical copper sheet 3 , the first columnar cavity 1, the columnar copper sheet 3 and the second columnar cavity 2 are placed in sequence, fastened by screws to form a sealed integral cavity; the first plane mirror 4 is fixed on the first columnar cavity 1, and the plano-concave mirror 5 and piezoelectric ceramics 6 are fixed on the second columnar cavity 2; a light entrance hole is provided on the first columnar cavity 1, and a narrowband filter 7 is fixed on the light entrance hole at an angle of 5 degrees to the vertical direction A light exit hole is provided on the second columnar cavity 2, and t...

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Abstract

The invention provides a narrowband optical frequency filtering apparatus comprising a two-lens optical resonant cavity and a narrowband filter plate, wherein the two-lens optical resonant cavity comprises a first cylindrical cavity (1), a second cylindrical cavity (2) and a cylindrical copper sheet (3); the first cylindrical cavity (1), the cylindrical copper sheet (3) and the second cylindrical cavity (2) are orderly arranged and fixed via screws to form a sealed integral cavity; a first flat lens (4) is fixed on the first cylindrical cavity (1), a flat concaved lens (5) and a piezoelectric ceramic part (6) are fixed on the second cylindrical cavity (2), the first cylindrical cavity (1) is provided with a light inlet hole, the narrowband filter plate (7) is fixed on the light inlet hole in such a way that the narrowband filter plate and a vertical direction form an included angle of 5 degrees, the second cylindrical cavity (2) is provided with a light outlet hole, and a second flat lens (8) is fixed on the light outlet hole. The apparatus is simple in structure, high in stability and easy in processing operation.

Description

technical field [0001] The invention relates to an optical frequency filtering device, in particular to a narrow-band optical frequency filtering device. Background technique [0002] The optical frequency filter device is an important experimental device in quantum optics experiments, which is mainly used to filter unwanted optical frequencies in the light field. [0003] At present, commercial optical frequency filter devices mainly include etalons and interference filters of various wavelength bands, but the minimum bandwidth of these optical frequency filter devices is several hundred GHz, for example, the narrow-band interference filter in the 1064nm band has a bandwidth of 0.5nm , the corresponding optical frequency bandwidth is 132GHz, and with the current technical level, it is very difficult to develop narrower etalons and interference filters. In some quantum optics experiments, optical frequency filter devices with narrower bandwidths, such as optical frequency f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B26/00
CPCG02B26/001
Inventor 刘建丽翟泽辉王鹏军
Owner SHANXI UNIV
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