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High-stability spectrograph wavelength calibration device

A technology of wavelength calibration and spectrometer, which is applied in the directions of measuring devices, spectrometry/spectrophotometry/monochromator, radiation pyrometry, etc., can solve the problem of expensive and complex systems of astronomical optical comb equipment, and the accuracy of calibration light sources is not good. For advanced problems, the effect of saving complex operations and manual monitoring costs, enriching calibration spectral lines, and reducing noise

Active Publication Date: 2021-04-16
NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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Problems solved by technology

[0004] In order to comprehensively solve the problems of the existing astronomical high-resolution spectrometer wavelength calibration, the traditional calibration light source is not high in accuracy, and the new generation of astronomical optical comb equipment is expensive and complex, the present invention proposes a new calibration device and designs super stable structure

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  • High-stability spectrograph wavelength calibration device
  • High-stability spectrograph wavelength calibration device
  • High-stability spectrograph wavelength calibration device

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Embodiment Construction

[0022]The present invention will be further described below in conjunction with the accompanying drawings and specific examples to better understand the invention and can be implemented in terms of manner, but the embodiments are not limited thereto.

[0023]This embodiment passesfigure 1 The highly stable spectrometer wavelength scalar device. The apparatus includes a lens barrel 6, a middle portion of the lens cartridge 6 is provided with two blocks of high-opposing lens 8 to form a Mibri-Perot chamber used as a spectral line generator, and one end of the lens barrel 6 is integrated with fiber. System 7, the other end integrally integrated with optical fiber coupling system 11, provided by the method of Purot, the optical fiber collimation system 7 and the optical fiber coupling system 11 is placed in the same medium The mechanism (the dielectric layer can also be a solid or other type. In this embodiment, the vacuum chamber 5 is preferably used as the same dielectric mechanism, and ...

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Abstract

The invention discloses a high-stability spectrograph wavelength calibration device which comprises a lens cone, a Fabry-Perot cavity used as a spectral line generator is formed in the middle of the lens cone, an optical fiber collimation system and an optical fiber coupling system are integrally integrated at the end of the lens cone, the whole lens cone is arranged in the same medium mechanism, and an optical fiber mode scrambler is arranged at the front end of the whole lens cone. After light beams emitted by the broadband light source are guided into the lens cone, the light beams are collimated and enter the Fabry-Perot cavity, the obtained transmission light has uniform and continuous comb tooth intervals in the frequency domain, and the transmission light is output after being coupled. The comb tooth interval spectral lines are generated by Fabry-Perot cavity interference, the interval and width of the spectral lines are completely determined by the technical parameters of the Fabry-Perot cavity, the uniform and bright comb tooth interval spectral lines can be generated only through broadband light source irradiation, and the light beam collimation coupling system and the Fabry-Perot cavity are integrally packaged, and are arranged in the same medium environment, so that the mechanical stability is ensured, and the consistency and stability of the refractive index of a free light path are ensured.

Description

Technical field[0001]The present invention relates to a spectrometer wavelength scaling device, and more particularly to a spectral wavelength scaling device having high stability.Background technique[0002]The development of astronomical high resolution spectrometers makes the geometric physics study a new step, which plays an important role in the outer planetary search, cosmic expansion speed measurement. In order to perform higher precision spectral detection, the accuracy and long-term stability of the spectrometer wave long fixtures are higher requirements. The traditional ruthenium argon lamp or iodine absorbent box is determined, and its own defects limit the accuracy of the scaling, such as the intensity of the spectrum line, the intensity is uneven, and the line generated by the argon lamp will be used Acting changes. Astronomical optical frequency combines its frequency domain space, uniform intensity distribution and extremely high stability is considered to be a new gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J3/28G01J3/02G01J3/26
Inventor 郝俊叶慧琪唐靓肖东
Owner NANJING INST OF ASTRONOMICAL OPTICS & TECH NAT ASTRONOMICAL OBSE
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