Intelligent synthesized measuring apparatus for half wave voltage of extinction ratio in crystal, and phase delay of wave plate

A technology of comprehensive measuring instrument and half-wave voltage, which is applied in the direction of testing optical performance, polarization influence characteristics, etc., and can solve problems such as complexity, inability to perform comprehensive measurement, and inability to complete measurement automatically

Inactive Publication Date: 2005-11-16
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a crystal extinction ratio for the inadequacies of the prior art such as the complexity of the above-mentioned prior art, the inability to guarantee the

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  • Intelligent synthesized measuring apparatus for half wave voltage of extinction ratio in crystal, and phase delay of wave plate
  • Intelligent synthesized measuring apparatus for half wave voltage of extinction ratio in crystal, and phase delay of wave plate
  • Intelligent synthesized measuring apparatus for half wave voltage of extinction ratio in crystal, and phase delay of wave plate

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Embodiment Construction

[0044] first please refer to figure 1 , figure 1 It is a schematic diagram of the optical path structure of the comprehensive measuring instrument of the present invention, as can be seen from the figure, the composition of the intelligent comprehensive measuring instrument of the crystal extinction ratio half-wave voltage and wave plate phase delay of the present invention is: a pulse modulation light source 1, and the pulse modulation light source 1 A beam splitter 2 is set in the forward direction of the light beam at 45°. In the transmission direction of the beam splitter 2, there are polarizer 3, sample to be tested 4, analyzer 5, first photodetector 6, first demodulation and amplification Circuit 7 and the first A / D converter 8, the signal line of the first A / D converter 8 is connected to the first input end of the computer 9; the first output of the computer 9 is driven by the first stepping motor 10 The device 5 rotates around the optical axis, and the second output o...

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Abstract

A intelligent synthesized measuring apparatus for half wave voltage of extinction ratio in crystal, and phase delay of wave plate which is featured as setting a spectroscope in 45 degree to forward direction of light beam, setting polarizer, article to be tested, analyzer, the first photoelectric detector, the first demodulation and amplification circuit as well as the first A/D converter, a signal line connection computer of the first A/D converter in sequence at transmission direction of the spectroscope, the first output of the computer is rotated around optical axis by a first step motor driving analyzer, the second output of the computer is rotated around optical axis by a second step motor driving article to be tested; and an attenuator, the second photoelectric detector, the second demodulation and amplification circuit as well as the second A/D converter, a signal line connection computer of the second A/D converter in sequence at reflection direction of the spectroscope. The invention can not only complete integration measurement of a plurality of parameters, but also has characters of high measurement accuracy, good reliability, and convenient operation.

Description

technical field [0001] The invention relates to crystals and belongs to polarization optics physical detection instruments, in particular to an intelligent comprehensive measuring instrument for crystal extinction ratio, half-wave voltage and wave plate phase delay. Background technique [0002] The extinction ratio and half-wave voltage of the crystal are important parameters to measure the optical properties of the crystal, which reflect the possible defects in the crystal, such as internal stress, optical inhomogeneity, etc. The smaller the extinction ratio and half-wave voltage of the crystal, the better the optical properties of the crystal. The better the quality. The accuracy of crystal extinction ratio measurement directly affects the development, production and application of crystals. Similarly, if the half-wave voltage of the crystal is very high, it will bring a lot of trouble to the driving power supply of the Q switch. Before the Q-switch is finished, it is ve...

Claims

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Application Information

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IPC IPC(8): G01M11/02
Inventor 薄锋朱健强师树恒王勇
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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