Measurement of mesopause temperature using the mesospheric airglow spectrum photometer (MASP)

Gao, Haiyang; Li, Licheng; Bu, Lingbing; Zhang, Qilin; Wang, Zhen; Tang, Yuanhe

doi:10.1016/j.optcom.2020.125546

Cited by 2 publications

(1 citation statement)

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“…As the demand for high and ultra-high spectral resolution detection persists, the transmission function of narrow-band interference filters becomes increasingly important. For example, MASP [ 5 ] leverages the characteristic of the interference filter transmission function, changing with the angle to separate the spectral lines at different rotational levels of O 2 molecules, thus enabling the measurement of Boltzmann temperature. The accurate measurement and calculation of the transmission function of interference filters and their variation at different angles are essential steps in the temperature inversion process, particularly in applications like MASP, where the separation of spectral lines is critical for precise temperature measurements.…”

Section: Introductionmentioning

confidence: 99%

Online Testing Method for the Fine Spectral Characteristics of Narrow-Band Interference Filters Based on a Narrow-Linewidth Tunable Laser

Ji,

Yang,

Lin

et al. 2024

Sensors

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The transmission spectrum of a narrow-band interference filter is crucial and highly influenced by factors such as the temperature and angle, thus requiring precise and online measurements. The traditional method of measuring the transmission spectrum of an interference filter involves the use of a spectrometer, but the accuracy of this method is limited. Moreover, placing a narrow-band interference filter inside a spectrometer hinders real-time online measurements. To address this issue, there is demand for high-precision online spectral testing methods. In response to this demand, we propose and experimentally validate a fine spectral characterization method for narrow-band interference filters. This method uses a narrow-linewidth tunable laser, achieving a spectral resolution in the MHz range for online testing. Two types of narrow-band interference filters were tested using the constructed laser spectroscopy experimental system, obtaining a transmission spectrum with a spectral resolution of 318 MHz. In comparison to spectrometer-based methods, our proposed method demonstrates higher spectral accuracy, enables online measurements, and provides more accurate measurements for special spectral interference filters. This approach has significant application value and promising development prospects.

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Section: Introductionmentioning

confidence: 99%