Method and device for detecting hydroxyl in quartz glass

A technology of quartz glass and detection method, which is applied in the direction of color/spectral characteristic measurement, etc., and can solve problems such as the inability to realize hydroxyl detection

Inactive Publication Date: 2014-07-30
ZHEJIANG NORMAL UNIVERSITY
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Problems solved by technology

These two methods can usually detect the hydroxyl content of the ppm level in the quartz glass very well, but cannot realize the detection of the hydroxyl group in the quartz glass at a lower concentration, so a hydroxyl detection technology with a higher sensitivity is required

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  • Method and device for detecting hydroxyl in quartz glass
  • Method and device for detecting hydroxyl in quartz glass
  • Method and device for detecting hydroxyl in quartz glass

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[0025] specific implementation

[0026] The present invention will be further described below in conjunction with the accompanying drawings.

[0027] Such as figure 1 , figure 2 As shown, the highly sensitive spectral detection device for hydroxyl groups in quartz glass includes a non-coaxial high-Q optical cavity, a tunable linearly polarized infrared laser, an incident laser coupling input unit composed of a set of lenses, and a photodetector, A signal receiving unit and a data analysis unit composed of a high-speed data acquisition card. The spectral detection device adopts a non-coaxial high-Q optical cavity, adopts tunable linearly polarized laser light as the detection light, and the laser light is incident on the quartz glass plate to be measured placed in the middle of the cavity at Brewster's angle.

[0028]Laser 1 emits linearly polarized infrared laser light, passes through optical isolator 2, enters the incident laser coupling input unit composed of optical cou...

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Abstract

The invention relates to the technical field of industrial detection and discloses a method and a device for detecting hydroxyl in quartz glass by a high-Q value intracavity absorption spectroscopy technology adopting tunable polarization laser as a light source. The method comprises the following steps of treating infrared laser by an incident laser coupling input unit, then transmitting the treated infrared laser treated into a quartz glass flake to be detected, receiving the infrared laser by a signal receiving unit and analyzing infrared laser attenuation rates at different wave lengths to obtain hydroxyl content of the quartz glass; and the infrared laser incidence light path comprises a high-Q value optical cavity composed of a pair of spherical broadband reflective mirrors, the spherical broadband reflective mirrors are non-coaxially arranged in parallel, and at a Brewster angle, the infrared laser is transmitted into the detected quartz glass flake in the high-Q value optical cavity. According to actual demands, the invention provides the novel method for quantificationally detecting hydroxyl in quartz glass by polarization infrared laser and the high-Q value intracavity absorption spectroscopy having a special design, and the method has higher detection sensitivity.

Description

technical field [0001] The invention relates to the technical field of industrial detection, in particular to a detection method and device for detecting hydroxyl groups in quartz glass using a high-Q intracavity absorption spectroscopy technology using tunable polarized laser light as a light source. Background technique [0002] Due to its high purity, high transmittance, good thermal stability and a series of excellent physical and chemical properties, quartz glass is widely used in the new electric light source industry, such as tungsten halogen lamps, mercury lamps, automobile lamps and other lighting sources of light tubes. Hydroxyl is the main impurity in quartz glass. With the change of hydroxyl content in quartz glass, the performance of quartz glass also changes. The hydroxyl in quartz glass will affect the quality and service life of the lamp. With the technical index of special attention to the quartz glass tube, how to accurately detect the hydroxyl content in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/39
Inventor 周卫东吴志伟
Owner ZHEJIANG NORMAL UNIVERSITY
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