Sapphire doping crystal laser high-temperature sensing system and method

Abstract

The invention discloses a sapphire doping crystal laser high-temperature sensing system and method. A pump light source is controlled to give out pump light by a drive control module, after the pump light penetrates through a transmission plane of a half-transparent and half-reflecting mirror, the pump light enters into a sapphire optical fiber and the pump light is sent to a sapphire doping crystal which is under a high-temperature environment through the sapphire optical fiber; a doping ion of the sapphire doping crystal is stimulated to generate exciting light through the pump light, the exciting light is subjected to multiple vibrations and generates a laser, and the laser is returned to the half-transparent and half-reflecting mirror through the sapphire optical fiber; after the laser is reflected through a reflecting surface of the half-transparent and half-reflecting mirror, the laser enters into a spectrum extraction module; spectrum information in the laser is obtained by the spectrum extraction module and sent to a data processing module, and the temperature of the high-temperature environment is obtained by calculation through the data processing module according to the spectrum information. According to the sapphire doping crystal laser high-temperature sensing system and method, measurement accuracy is increased, measurement accuracy in a high-temperature area is guaranteed, and measurement reliability is good for a long time.

Description

technical field [0001] The invention relates to the technical field of laser high-temperature sensors, in particular to a sapphire-doped crystal laser high-temperature sensing system and method. Background technique [0002] There is a huge demand for sensing technology in high-temperature environments (>800°C). The physical properties of many materials will change dramatically at high temperatures, and many chemical reactions can only proceed smoothly at high temperatures. High-temperature sensing technologies are used in aerospace, automotive And energy industry plays an important role, it can improve energy efficiency reduce emissions, reduce equipment maintenance and failure cycle. However, there is currently a lack of reliable high-temperature measurement methods, most of which rely on manual experience observation or indirect measurement methods, which are highly subjective and cannot achieve quantitative measurement; thermocouples made of precious metals such as pl...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the signal detected by the sapphire optical fiber high temperature sensor in the prior art is the intensity of the light wave radiated by the black body, which is too much affected by other factors such as optical path loss fluctuation, optical path pollution, etc., and the accuracy is not high, and For the defect that the signal-to-noise ratio is difficult to guarantee, a sapphire-doped crystal laser high-temperature sensing system and method are provided

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