The Principle and Application Prospect of Optical Temperature Measurement

The principle of optical thermometry not only changes the cognition of deterministic worldview in classical physics but also lays an important foundation for quantum mechanics. The challenge is still to reach places that are difficult to reach or that have an impact on the measurement environment. In this paper, the physical meaning of the principle of optical thermometry and its application and research progress in modern physics are reviewed. The fundamental limitation in quantum measurement is revealed. In this paper, the principle of temperature measurement is based on the characteristic that the emission spectrum of the excited fluorescent material changes with the temperature. The most important characteristic of fluorescence spectrum temperature measurement is that it overcomes the limitations of traditional temperature measurement. In this paper, the basic theory of blackbody radiation, especially Planck’s law radiation, is briefly introduced and the close relationship between radiant energy and temperature is emphasized. In the third part, Raman spectroscopy and its basic principle are studied. The last part of this paper focuses on the temperature measurement method’s in-depth study of its principle and application. The theoretical basis of the method, including the radiation law and optical properties, is described in detail. The photometric temperature measurement method has a wide application prospect in the fields of industrial production process monitoring, fire early warning, scientific research experiments, and so on. Future research can further optimize the photometric temperature measurement technology, improve its adaptability and reliability, and provide more effective means for temperature measurement.