Ponomarev Yu N
Institute of Atmospheric Optics SB RAS, Akademicheskii ave. 1, Tomsk 634055, Russia.
Spectrochim Acta A Mol Biomol Spectrosc. 2004 Dec;60(14):3469-76. doi: 10.1016/j.saa.2004.02.026.
The results of designing multipurpose high-sensitive photo-acoustic (PA) detectors and their application to high-resolution diode laser spectroscopy of molecular gases, gas analysis, and aerosol absorption measurements are summarized in this paper. The hardware and software of the diode laser spectrometer with a Helmholtz resonant PA detector providing an absorption sensitivity limit of better than 10(-7)Wm(-1)Hz(-1/2) are described. A procedure is proposed for an experiment involving the measurements of the rotational structure of hot vibrational bands of molecules. The results of the application of the nonresonant PA cell with temporal resolution of signals to measurements of weak nonresonant absorption of gases and soot aerosols are presented, and the possibility of creating a broad-band PA laser diode aerosol-meter is discussed.
本文总结了多功能高灵敏度光声(PA)探测器的设计结果及其在分子气体高分辨率二极管激光光谱、气体分析和气溶胶吸收测量中的应用。描述了配备亥姆霍兹共振PA探测器的二极管激光光谱仪的硬件和软件,其吸收灵敏度极限优于10^(-7)Wm^(-1)Hz^(-1/2)。提出了一种用于测量分子热振动带转动结构的实验程序。给出了具有信号时间分辨率的非共振PA池在气体和烟灰气溶胶弱非共振吸收测量中的应用结果,并讨论了制造宽带PA激光二极管气溶胶测量仪的可能性。