Salim Saber G R, Fox Nigel P, Theocharous Evangelos, Sun Tong, Grattan Kenneth T V
National Physical Laboratory, Hampton Road, Teddington, Middlesex, TW11 0LW, UK.
Appl Opt. 2011 Feb 20;50(6):866-75. doi: 10.1364/AO.50.000866.
Temperature and nonlinearity effects are two important factors that limit the use of photodiode array spectrometers. Usually the spectrometer is calibrated at a known temperature against a reference source of a particular spectral radiance, and then it is used at different temperatures to measure sources of different spectral radiances. These factors are expected to be problematic for nontemperature-stabilized instruments used for in-the-field experiments, where the radiant power of the site changes continuously with the sun tilt. This paper describes the effect of ambient temperature on a nontemperature-stabilized linear photodiode array spectrometer over the temperature range from 5 °C to 40 °C. The nonlinearity effects on both signal amplification and different levels of radiant power have also been studied and are presented in this paper.
温度和非线性效应是限制光电二极管阵列光谱仪使用的两个重要因素。通常，光谱仪在已知温度下针对特定光谱辐射率的参考源进行校准，然后在不同温度下用于测量不同光谱辐射率的源。对于用于现场实验的非温度稳定仪器而言，这些因素预计会成为问题，因为现场的辐射功率会随着太阳倾斜度而不断变化。本文描述了环境温度对在5°C至40°C温度范围内的非温度稳定线性光电二极管阵列光谱仪的影响。本文还研究并呈现了信号放大和不同辐射功率水平上的非线性效应。
