一种基于微腔和微气室的光学测温装置及其实现方法
By using an optical temperature measurement device based on microcavities and microcells, molecular or atomic absorption spectra are calibrated using the free spectral range of the microcavities, and combined with the linear output of semiconductor lasers, the drift of traditional thermometers and the limitations of large etalons are solved, realizing miniaturized, integrated and rapid temperature measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING CHANGCHENG INST OF METROLOGY & MEASUREMENT AVIATION IND CORP OF CHINA
- Filing Date
- 2023-11-30
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional thermometers are significantly affected by external environmental factors, leading to drift in temperature measurement results. Furthermore, large etalons limit the integration and real-time measurement of Doppler-stretched temperature measurement.
An optical temperature measurement device based on microcavities and microcells is used to calibrate the absorption lines of molecules or atoms through the free spectral range of the microcavities. Combined with the linear relationship between the output wavelength of the semiconductor laser and the injected current, broadband swept-frequency laser output is achieved, simplifying the optical path structure and performing temperature calculations.
It achieves the integration, simplification, and long-term online measurement of temperature measuring devices, avoiding the problems of large size, high cost, and long measurement time, and has the advantages of high precision and fast measurement.
Smart Images
Figure CN117782349B_ABST