本文選題：光程長度測量 + 直接吸收譜��； 參考：《光譜學與光譜分析》2017年09期

【摘要】：基于吸收光譜的基本原理,通過計算比爾-朗伯定律數(shù)學表達式中的參數(shù)實現(xiàn)了光程長度的測量。分析了高斯線型、洛倫茲線型和Voigt線型,采用了Voigt線型對光譜信號進行擬合。研究了Voigt線型峰值計算方法、洛倫茲線寬計算和誤差函數(shù)求解三個內(nèi)容。利用可調(diào)諧半導體激光吸收譜技術(shù)(TDLAS)中的直接吸收譜技術(shù)測量了氧氣的吸收光譜,得到擬合的光譜峰值數(shù)據(jù)。將峰值數(shù)據(jù)帶入比爾-朗伯定律數(shù)學表達式中,計算出實驗光程長度為66.55cm。對比測量值66.04cm,測量精度為0.78%,該方法用于光程長度測量是可行的。
[Abstract]:Based on the basic principle of absorption spectrum, the measurement of optical path length is realized by calculating the parameters in the mathematical expression of Bear-Lambert 's law. The Gao Si, Lorentz and Voigt lines are analyzed, and the spectral signals are fitted by Voigt. The calculation method of Voigt linear peak value, the calculation of Lorentz linewidth and the solution of error function are studied. The absorption spectra of oxygen were measured by direct absorption spectroscopy in tunable semiconductor laser absorption spectroscopy (TDLAS), and the fitted peak spectral data were obtained. The peak value data is introduced into the mathematical expression of Bill Lambert's law and the experimental optical path length is calculated to be 66.55 cm. The measured value is 66.04 cm and the measuring accuracy is 0.78. This method is feasible for the measurement of optical path length.
【作者單位】： 中國人民解放軍裝備學院激光推進及其應(yīng)用國家重點實驗室;
【基金】：國家自然科學基金項目(11404191)資助
【分類號】：O433.1

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